101638271522 has 6 divisors (see below), whose sum is σ = 152458083579. Its totient is φ = 50818910330.

The previous prime is 101638271447. The next prime is 101638271549. The reversal of 101638271522 is 225172836101.

It can be written as a sum of positive squares in only one way, i.e., 50819135761 + 50819135761 = 225431^2 + 225431^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=225431.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 338147 + ... + 563577.

Almost surely, 2^101638271522 is an apocalyptic number.

101638271522 is a deficient number, since it is larger than the sum of its proper divisors (50819812057).

101638271522 is an frugal number, since it uses more digits than its factorization.

101638271522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450864 (or 225433 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The spelling of 101638271522 in words is "one hundred one billion, six hundred thirty-eight million, two hundred seventy-one thousand, five hundred twenty-two".