23315178421640 has 64 divisors (see below), whose sum is σ = 59953741660800. Its totient is φ = 7993718696448.

The previous prime is 23315178421607. The next prime is 23315178421669. The reversal of 23315178421640 is 4612487151332.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64597196 + ... + 64957124.

It is an arithmetic number, because the mean of its divisors is an integer number (936777213450).

Almost surely, 2^{23315178421640} is an apocalyptic number.

23315178421640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23315178421640 is an abundant number, since it is smaller than the sum of its proper divisors (36638563239160).

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

23315178421640 is a wasteful number, since it uses less digits than its factorization.

23315178421640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591294 (or 591290 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 47.

The spelling of 23315178421640 in words is "twenty-three trillion, three hundred fifteen billion, one hundred seventy-eight million, four hundred twenty-one thousand, six hundred forty".