105156551556 has 72 divisors (see below), whose sum is σ = 303816187584. Its totient is φ = 30041703360.

The previous prime is 105156551537. The next prime is 105156551567. The reversal of 105156551556 is 655155651501.

105156551556 is a `hidden beast` number, since 10 + 5 + 15 + 65 + 515 + 56 = 666.

It is a super-2 number, since 2×105156551556² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4041966 + ... + 4067898.

It is an arithmetic number, because the mean of its divisors is an integer number (4219669272).

Almost surely, 2^105156551556 is an apocalyptic number.

It is an amenable number.

105156551556 is an abundant number, since it is smaller than the sum of its proper divisors (198659636028).

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

105156551556 is a wasteful number, since it uses less digits than its factorization.

105156551556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42041 (or 42036 counting only the distinct ones).

The product of its (nonzero) digits is 562500, while the sum is 45.

The spelling of 105156551556 in words is "one hundred five billion, one hundred fifty-six million, five hundred fifty-one thousand, five hundred fifty-six".