23907308505990 has 128 divisors (see below), whose sum is σ = 70796394869760. Its totient is φ = 5031473407488.

The previous prime is 23907308505989. The next prime is 23907308505991. The reversal of 23907308505990 is 9950580370932.

It is an interprime number because it is at equal distance from previous prime (23907308505989) and next prime (23907308505991).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23907308505991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9945480 + ... + 12113099.

It is an arithmetic number, because the mean of its divisors is an integer number (553096834920).

Almost surely, 2^{23907308505990} is an apocalyptic number.

23907308505990 is an abundant number, since it is smaller than the sum of its proper divisors (46889086363770).

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

23907308505990 is a wasteful number, since it uses less digits than its factorization.

23907308505990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22059006.

The product of its (nonzero) digits is 18370800, while the sum is 60.

The spelling of 23907308505990 in words is "twenty-three trillion, nine hundred seven billion, three hundred eight million, five hundred five thousand, nine hundred ninety".