1157122211049 has 80 divisors (see below), whose sum is σ = 2000949249600. Its totient is φ = 660847771584.

The previous prime is 1157122211033. The next prime is 1157122211053. The reversal of 1157122211049 is 9401122217511.

It is a happy number.

1157122211049 is a `hidden beast` number, since 1 + 1 + 571 + 22 + 21 + 1 + 0 + 49 = 666.

It is not a de Polignac number, because 1157122211049 - 2⁴ = 1157122211033 is a prime.

It is a super-2 number, since 2×1157122211049² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1157122211059) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 155127282 + ... + 155134740.

It is an arithmetic number, because the mean of its divisors is an integer number (25011865620).

Almost surely, 2^{1157122211049} is an apocalyptic number.

It is an amenable number.

1157122211049 is a deficient number, since it is larger than the sum of its proper divisors (843827038551).

1157122211049 is an frugal number, since it uses more digits than its factorization.

1157122211049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9889 (or 9862 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 36.

The spelling of 1157122211049 in words is "one trillion, one hundred fifty-seven billion, one hundred twenty-two million, two hundred eleven thousand, forty-nine".