23420137157755 has 32 divisors (see below), whose sum is σ = 30849049143360. Its totient is φ = 16961966261760.

The previous prime is 23420137157731. The next prime is 23420137157761. The reversal of 23420137157755 is 55775173102432.

It is not a de Polignac number, because 23420137157755 - 2²⁹ = 23419600286843 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7566645 + ... + 10202665.

It is an arithmetic number, because the mean of its divisors is an integer number (964032785730).

Almost surely, 2^{23420137157755} is an apocalyptic number.

23420137157755 is a deficient number, since it is larger than the sum of its proper divisors (7428911985605).

23420137157755 is a wasteful number, since it uses less digits than its factorization.

23420137157755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2638671.

The product of its (nonzero) digits is 6174000, while the sum is 52.

The spelling of 23420137157755 in words is "twenty-three trillion, four hundred twenty billion, one hundred thirty-seven million, one hundred fifty-seven thousand, seven hundred fifty-five".