20153038868 has 12 divisors (see below), whose sum is σ = 36405489792. Its totient is φ = 9751470360.

The previous prime is 20153038861. The next prime is 20153038877. The reversal of 20153038868 is 86883035102.

It is a super-2 number, since 2×20153038868² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20153038861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81262130 + ... + 81262377.

It is an arithmetic number, because the mean of its divisors is an integer number (3033790816).

Almost surely, 2^20153038868 is an apocalyptic number.

It is an amenable number.

20153038868 is a deficient number, since it is larger than the sum of its proper divisors (16252450924).

20153038868 is a wasteful number, since it uses less digits than its factorization.

20153038868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162524542 (or 162524540 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 44.

The spelling of 20153038868 in words is "twenty billion, one hundred fifty-three million, thirty-eight thousand, eight hundred sixty-eight".