19924657152 has 88 divisors (see below), whose sum is σ = 56230533216. Its totient is φ = 6250856448.

The previous prime is 19924657141. The next prime is 19924657153. The reversal of 19924657152 is 25175642991.

It is a super-2 number, since 2×19924657152² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 19924657095 and 19924657104.

It is not an unprimeable number, because it can be changed into a prime (19924657153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138538 + ... + 242985.

It is an arithmetic number, because the mean of its divisors is an integer number (638983332).

Almost surely, 2^19924657152 is an apocalyptic number.

19924657152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19924657152 is an abundant number, since it is smaller than the sum of its proper divisors (36305876064).

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

19924657152 is a wasteful number, since it uses less digits than its factorization.

19924657152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381563 (or 381545 counting only the distinct ones).

The product of its digits is 1360800, while the sum is 51.

The spelling of 19924657152 in words is "nineteen billion, nine hundred twenty-four million, six hundred fifty-seven thousand, one hundred fifty-two".