105716561656 has 8 divisors (see below), whose sum is σ = 198218553120. Its totient is φ = 52858280824.

The previous prime is 105716561593. The next prime is 105716561689. The reversal of 105716561656 is 656165617501.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×105716561656² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6607285096 + ... + 6607285111.

It is an arithmetic number, because the mean of its divisors is an integer number (24777319140).

Almost surely, 2^105716561656 is an apocalyptic number.

It is an amenable number.

105716561656 is a deficient number, since it is larger than the sum of its proper divisors (92501991464).

105716561656 is a wasteful number, since it uses less digits than its factorization.

105716561656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13214570213 (or 13214570209 counting only the distinct ones).

The product of its (nonzero) digits is 1134000, while the sum is 49.

The spelling of 105716561656 in words is "one hundred five billion, seven hundred sixteen million, five hundred sixty-one thousand, six hundred fifty-six".