101561172116 has 24 divisors (see below), whose sum is σ = 177991724064. Its totient is φ = 50706453600.

The previous prime is 101561172079. The next prime is 101561172203. The reversal of 101561172116 is 611271165101.

It is a congruent number.

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, 8427191 + ... + 8439233.

It is an arithmetic number, because the mean of its divisors is an integer number (7416321836).

Almost surely, 2^101561172116 is an apocalyptic number.

It is an amenable number.

101561172116 is a deficient number, since it is larger than the sum of its proper divisors (76430551948).

101561172116 is a wasteful number, since it uses less digits than its factorization.

101561172116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14951 (or 14949 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 32.

The spelling of 101561172116 in words is "one hundred one billion, five hundred sixty-one million, one hundred seventy-two thousand, one hundred sixteen".