1157170728116 has 12 divisors (see below), whose sum is σ = 2180821756932. Its totient is φ = 534078797568.

The previous prime is 1157170728059. The next prime is 1157170728143. The reversal of 1157170728116 is 6118270717511.

It can be written as a sum of positive squares in 2 ways, for example, as 45736099600 + 1111434628516 = 213860^2 + 1054246^2 .

It is a congruent number.

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, 11126641565 + ... + 11126641668.

It is an arithmetic number, because the mean of its divisors is an integer number (181735146411).

Almost surely, 2^{1157170728116} is an apocalyptic number.

It is an amenable number.

1157170728116 is a deficient number, since it is larger than the sum of its proper divisors (1023651028816).

1157170728116 is a wasteful number, since it uses less digits than its factorization.

1157170728116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22253283250 (or 22253283248 counting only the distinct ones).

The product of its (nonzero) digits is 164640, while the sum is 47.

The spelling of 1157170728116 in words is "one trillion, one hundred fifty-seven billion, one hundred seventy million, seven hundred twenty-eight thousand, one hundred sixteen".