11872920402 has 36 divisors (see below), whose sum is σ = 29924607726. Its totient is φ = 3392262720.

The previous prime is 11872920391. The next prime is 11872920407. The reversal of 11872920402 is 20402927811.

11872920402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 9779034321 + 2093886081 = 98889^2 + 45759^2 .

It is not an unprimeable number, because it can be changed into a prime (11872920407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6729799 + ... + 6731562.

Almost surely, 2^11872920402 is an apocalyptic number.

11872920402 is an abundant number, since it is smaller than the sum of its proper divisors (18051687324).

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

11872920402 is a wasteful number, since it uses less digits than its factorization.

11872920402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13461383 (or 13461373 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The spelling of 11872920402 in words is "eleven billion, eight hundred seventy-two million, nine hundred twenty thousand, four hundred two".