20152172372 has 12 divisors (see below), whose sum is σ = 35302184736. Its totient is φ = 10065833880.

The previous prime is 20152172363. The next prime is 20152172399. The reversal of 20152172372 is 27327125102.

It is a super-2 number, since 2×20152172372² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2558654 + ... + 2566517.

It is an arithmetic number, because the mean of its divisors is an integer number (2941848728).

Almost surely, 2^20152172372 is an apocalyptic number.

It is an amenable number.

20152172372 is a deficient number, since it is larger than the sum of its proper divisors (15150012364).

20152172372 is a wasteful number, since it uses less digits than its factorization.

20152172372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5126158 (or 5126156 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 32.

Adding to 20152172372 its reverse (27327125102), we get a palindrome (47479297474).

The spelling of 20152172372 in words is "twenty billion, one hundred fifty-two million, one hundred seventy-two thousand, three hundred seventy-two".