20153623688 has 32 divisors (see below), whose sum is σ = 42100421760. Its totient is φ = 8965826880.

The previous prime is 20153623657. The next prime is 20153623717. The reversal of 20153623688 is 88632635102.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2432231 + ... + 2440502.

It is an arithmetic number, because the mean of its divisors is an integer number (1315638180).

Almost surely, 2^20153623688 is an apocalyptic number.

It is an amenable number.

20153623688 is an abundant number, since it is smaller than the sum of its proper divisors (21946798072).

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

20153623688 is a wasteful number, since it uses less digits than its factorization.

20153623688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4872797 (or 4872793 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 44.

The spelling of 20153623688 in words is "twenty billion, one hundred fifty-three million, six hundred twenty-three thousand, six hundred eighty-eight".