12698240040 has 96 divisors (see below), whose sum is σ = 42147406080. Its totient is φ = 3314146176.

The previous prime is 12698240033. The next prime is 12698240081. The reversal of 12698240040 is 4004289621.

12698240040 is a `hidden beast` number, since 126 + 98 + 2 + 400 + 40 = 666.

It is a super-2 number, since 2×12698240040² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 12698239977 and 12698240004.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 358324 + ... + 392163.

It is an arithmetic number, because the mean of its divisors is an integer number (439035480).

Almost surely, 2^12698240040 is an apocalyptic number.

12698240040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12698240040 is an abundant number, since it is smaller than the sum of its proper divisors (29449166040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12698240040 is a wasteful number, since it uses less digits than its factorization.

12698240040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750551 (or 750544 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The spelling of 12698240040 in words is "twelve billion, six hundred ninety-eight million, two hundred forty thousand, forty".