1151555116556 has 48 divisors (see below), whose sum is σ = 2298070940256. Its totient is φ = 500185734144.

The previous prime is 1151555116541. The next prime is 1151555116603. The reversal of 1151555116556 is 6556115551511.

It is a super-2 number, since 2×1151555116556² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1151555116556.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14162690 + ... + 14243766.

It is an arithmetic number, because the mean of its divisors is an integer number (47876477922).

Almost surely, 2^{1151555116556} is an apocalyptic number.

It is an amenable number.

1151555116556 is a deficient number, since it is larger than the sum of its proper divisors (1146515823700).

1151555116556 is a wasteful number, since it uses less digits than its factorization.

1151555116556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97178 (or 97176 counting only the distinct ones).

The product of its digits is 562500, while the sum is 47.

The spelling of 1151555116556 in words is "one trillion, one hundred fifty-one billion, five hundred fifty-five million, one hundred sixteen thousand, five hundred fifty-six".