20126373164538 has 64 divisors (see below), whose sum is σ = 43143546896640. Its totient is φ = 6242877729792.

The previous prime is 20126373164537. The next prime is 20126373164543. The reversal of 20126373164538 is 83546137362102.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20126373164537) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40688968 + ... + 41180636.

It is an arithmetic number, because the mean of its divisors is an integer number (674117920260).

Almost surely, 2^{20126373164538} is an apocalyptic number.

20126373164538 is an abundant number, since it is smaller than the sum of its proper divisors (23017173732102).

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

20126373164538 is a wasteful number, since it uses less digits than its factorization.

20126373164538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499751.

The product of its (nonzero) digits is 4354560, while the sum is 51.

The spelling of 20126373164538 in words is "twenty trillion, one hundred twenty-six billion, three hundred seventy-three million, one hundred sixty-four thousand, five hundred thirty-eight".