82633697478 has 64 divisors (see below), whose sum is σ = 195354167040. Its totient is φ = 25801372800.

The previous prime is 82633697477. The next prime is 82633697483. The reversal of 82633697478 is 87479633628.

82633697478 is a `hidden beast` number, since 8 + 263 + 369 + 7 + 4 + 7 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82633697477) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19608 + ... + 407003.

It is an arithmetic number, because the mean of its divisors is an integer number (3052408860).

Almost surely, 2^82633697478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82633697478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97677083520).

82633697478 is an abundant number, since it is smaller than the sum of its proper divisors (112720469562).

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

82633697478 is a wasteful number, since it uses less digits than its factorization.

82633697478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426850 (or 426844 counting only the distinct ones).

The product of its digits is 73156608, while the sum is 63.

The spelling of 82633697478 in words is "eighty-two billion, six hundred thirty-three million, six hundred ninety-seven thousand, four hundred seventy-eight".