1156081509377 has 4 divisors (see below), whose sum is σ = 1157885069316. Its totient is φ = 1154277949440.

The previous prime is 1156081509343. The next prime is 1156081509383. The reversal of 1156081509377 is 7739051806511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 900418801216 + 255662708161 = 948904^2 + 505631^2 .

It is a cyclic number.

It is not a de Polignac number, because 1156081509377 - 2³⁰ = 1155007767553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1156081509677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 901779008 + ... + 901780289.

It is an arithmetic number, because the mean of its divisors is an integer number (289471267329).

Almost surely, 2^{1156081509377} is an apocalyptic number.

It is an amenable number.

1156081509377 is a deficient number, since it is larger than the sum of its proper divisors (1803559939).

1156081509377 is an equidigital number, since it uses as much as digits as its factorization.

1156081509377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1803559938.

The product of its (nonzero) digits is 1587600, while the sum is 53.

The spelling of 1156081509377 in words is "one trillion, one hundred fifty-six billion, eighty-one million, five hundred nine thousand, three hundred seventy-seven".