23921000154 has 12 divisors (see below), whose sum is σ = 51828833706. Its totient is φ = 7973666712.

The previous prime is 23921000141. The next prime is 23921000161. The reversal of 23921000154 is 45100012932.

It can be written as a sum of positive squares in only one way, i.e., 12683940129 + 11237060025 = 112623^2 + 106005^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 664472209 + ... + 664472244.

Almost surely, 2^23921000154 is an apocalyptic number.

23921000154 is an abundant number, since it is smaller than the sum of its proper divisors (27907833552).

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

23921000154 is a wasteful number, since it uses less digits than its factorization.

23921000154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328944461 (or 1328944458 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The spelling of 23921000154 in words is "twenty-three billion, nine hundred twenty-one million, one hundred fifty-four", and thus it is an aban number.