1016555515656 has 16 divisors (see below), whose sum is σ = 2541388789200. Its totient is φ = 338851838544.

The previous prime is 1016555515637. The next prime is 1016555515691. The reversal of 1016555515656 is 6565155556101.

It is a super-2 number, since 2×1016555515656² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1016555515599 and 1016555515608.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21178239886 + ... + 21178239933.

It is an arithmetic number, because the mean of its divisors is an integer number (158836799325).

Almost surely, 2^{1016555515656} is an apocalyptic number.

It is an amenable number.

1016555515656 is an abundant number, since it is smaller than the sum of its proper divisors (1524833273544).

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

1016555515656 is a wasteful number, since it uses less digits than its factorization.

1016555515656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42356479828 (or 42356479824 counting only the distinct ones).

The product of its (nonzero) digits is 3375000, while the sum is 51.

The spelling of 1016555515656 in words is "one trillion, sixteen billion, five hundred fifty-five million, five hundred fifteen thousand, six hundred fifty-six".