10111942520 has 16 divisors (see below), whose sum is σ = 22751870760. Its totient is φ = 4044776992.

The previous prime is 10111942513. The next prime is 10111942523. The reversal of 10111942520 is 2524911101.

It is a self number, because there is not a number n which added to its sum of digits gives 10111942520.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10111942523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126399242 + ... + 126399321.

Almost surely, 2^10111942520 is an apocalyptic number.

10111942520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10111942520 is an abundant number, since it is smaller than the sum of its proper divisors (12639928240).

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

10111942520 is a wasteful number, since it uses less digits than its factorization.

10111942520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252798574 (or 252798570 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 26.

The spelling of 10111942520 in words is "ten billion, one hundred eleven million, nine hundred forty-two thousand, five hundred twenty".