1156756471345 has 4 divisors (see below), whose sum is σ = 1388107765620. Its totient is φ = 925405177072.

The previous prime is 1156756471331. The next prime is 1156756471349. The reversal of 1156756471345 is 5431746576511.

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 153978544801 + 1002777926544 = 392401^2 + 1001388^2 .

It is a cyclic number.

It is not a de Polignac number, because 1156756471345 - 2³⁹ = 607000657457 is a prime.

It is a super-2 number, since 2×1156756471345² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1156756471349) 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, 115675647130 + ... + 115675647139.

It is an arithmetic number, because the mean of its divisors is an integer number (347026941405).

Almost surely, 2^{1156756471345} is an apocalyptic number.

It is an amenable number.

1156756471345 is a deficient number, since it is larger than the sum of its proper divisors (231351294275).

1156756471345 is an equidigital number, since it uses as much as digits as its factorization.

1156756471345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231351294274.

The product of its digits is 10584000, while the sum is 55.

The spelling of 1156756471345 in words is "one trillion, one hundred fifty-six billion, seven hundred fifty-six million, four hundred seventy-one thousand, three hundred forty-five".