20413020402 has 48 divisors (see below), whose sum is σ = 47117285280. Its totient is φ = 6364780416.

The previous prime is 20413020371. The next prime is 20413020409. The reversal of 20413020402 is 20402031402.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20413020409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 154752 + ... + 254507.

It is an arithmetic number, because the mean of its divisors is an integer number (981610110).

Almost surely, 2^20413020402 is an apocalyptic number.

20413020402 is an abundant number, since it is smaller than the sum of its proper divisors (26704264878).

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

20413020402 is a wasteful number, since it uses less digits than its factorization.

20413020402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409447 (or 409444 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 20413020402 its reverse (20402031402), we get a palindrome (40815051804).

The spelling of 20413020402 in words is "twenty billion, four hundred thirteen million, twenty thousand, four hundred two".