23907121290 has 48 divisors (see below), whose sum is σ = 66939942888. Its totient is φ = 5884829568.

The previous prime is 23907121247. The next prime is 23907121309. The reversal of 23907121290 is 9212170932.

It can be written as a sum of positive squares in 4 ways, for example, as 16874789409 + 7032331881 = 129903^2 + 83859^2 .

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 23 ways as a sum of consecutive naturals, for example, 10215549 + ... + 10217888.

Almost surely, 2^23907121290 is an apocalyptic number.

23907121290 is an abundant number, since it is smaller than the sum of its proper divisors (43032821598).

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

23907121290 is a wasteful number, since it uses less digits than its factorization.

23907121290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20433463 (or 20433460 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The spelling of 23907121290 in words is "twenty-three billion, nine hundred seven million, one hundred twenty-one thousand, two hundred ninety".