1155345742956 has 24 divisors (see below), whose sum is σ = 2697885263920. Its totient is φ = 384818314752.

The previous prime is 1155345742931. The next prime is 1155345742973. The reversal of 1155345742956 is 6592475435511.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1155345742896 and 1155345742905.

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, 37100401 + ... + 37131528.

Almost surely, 2^{1155345742956} is an apocalyptic number.

It is an amenable number.

1155345742956 is an abundant number, since it is smaller than the sum of its proper divisors (1542539520964).

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

1155345742956 is a wasteful number, since it uses less digits than its factorization.

1155345742956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74233233 (or 74233231 counting only the distinct ones).

The product of its digits is 22680000, while the sum is 57.

The spelling of 1155345742956 in words is "one trillion, one hundred fifty-five billion, three hundred forty-five million, seven hundred forty-two thousand, nine hundred fifty-six".