1156127211252 has 72 divisors (see below), whose sum is σ = 3147744575976. Its totient is φ = 355673873664.

The previous prime is 1156127211227. The next prime is 1156127211271. The reversal of 1156127211252 is 2521127216511.

1156127211252 is a `hidden beast` number, since 1 + 1 + 5 + 612 + 7 + 2 + 11 + 25 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 642889654416 + 513237556836 = 801804^2 + 716406^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2740858 + ... + 3134414.

Almost surely, 2^{1156127211252} is an apocalyptic number.

1156127211252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1156127211252 is an abundant number, since it is smaller than the sum of its proper divisors (1991617364724).

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

1156127211252 is a wasteful number, since it uses less digits than its factorization.

1156127211252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399857 (or 399852 counting only the distinct ones).

The product of its digits is 16800, while the sum is 36.

The spelling of 1156127211252 in words is "one trillion, one hundred fifty-six billion, one hundred twenty-seven million, two hundred eleven thousand, two hundred fifty-two".