163752506538 has 16 divisors (see below), whose sum is σ = 330403288896. Its totient is φ = 54101122880.

The previous prime is 163752506513. The next prime is 163752506557. The reversal of 163752506538 is 835605257361.

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, 120760758 + ... + 120762113.

It is an arithmetic number, because the mean of its divisors is an integer number (20650205556).

Almost surely, 2^163752506538 is an apocalyptic number.

163752506538 is an abundant number, since it is smaller than the sum of its proper divisors (166650782358).

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

163752506538 is a wasteful number, since it uses less digits than its factorization.

163752506538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241522989.

The product of its (nonzero) digits is 4536000, while the sum is 51.

The spelling of 163752506538 in words is "one hundred sixty-three billion, seven hundred fifty-two million, five hundred six thousand, five hundred thirty-eight".