23687242721579 has 4 divisors (see below), whose sum is σ = 23711738319984. Its totient is φ = 23662747123176.

The previous prime is 23687242721573. The next prime is 23687242721587. The reversal of 23687242721579 is 97512724278632.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23687242721579 - 2²⁸ = 23686974286123 is a prime.

It is a super-2 number, since 2×23687242721579² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23687242721573) 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, 12247797752 + ... + 12247799685.

It is an arithmetic number, because the mean of its divisors is an integer number (5927934579996).

Almost surely, 2^{23687242721579} is an apocalyptic number.

23687242721579 is a deficient number, since it is larger than the sum of its proper divisors (24495598405).

23687242721579 is an equidigital number, since it uses as much as digits as its factorization.

23687242721579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24495598404.

The product of its digits is 142248960, while the sum is 65.

The spelling of 23687242721579 in words is "twenty-three trillion, six hundred eighty-seven billion, two hundred forty-two million, seven hundred twenty-one thousand, five hundred seventy-nine".