20423255124512 has 48 divisors (see below), whose sum is σ = 42904296862560. Its totient is φ = 9541650534912.

The previous prime is 20423255124509. The next prime is 20423255124563. The reversal of 20423255124512 is 21542155232402.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230030138 + ... + 230118905.

It is an arithmetic number, because the mean of its divisors is an integer number (893839517970).

Almost surely, 2^{20423255124512} is an apocalyptic number.

It is an amenable number.

20423255124512 is an abundant number, since it is smaller than the sum of its proper divisors (22481041738048).

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

20423255124512 is a wasteful number, since it uses less digits than its factorization.

20423255124512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460149145 (or 460149137 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 38.

The spelling of 20423255124512 in words is "twenty trillion, four hundred twenty-three billion, two hundred fifty-five million, one hundred twenty-four thousand, five hundred twelve".