11556417313 has 16 divisors (see below), whose sum is σ = 13518989440. Its totient is φ = 9671913216.

The previous prime is 11556417287. The next prime is 11556417343. The reversal of 11556417313 is 31371465511.

It is not a de Polignac number, because 11556417313 - 2⁹ = 11556416801 is a prime.

It is a super-2 number, since 2×11556417313² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11556417343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1437481 + ... + 1445497.

It is an arithmetic number, because the mean of its divisors is an integer number (844936840).

Almost surely, 2^11556417313 is an apocalyptic number.

It is an amenable number.

11556417313 is a deficient number, since it is larger than the sum of its proper divisors (1962572127).

11556417313 is an equidigital number, since it uses as much as digits as its factorization.

11556417313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12856.

The product of its digits is 37800, while the sum is 37.

The spelling of 11556417313 in words is "eleven billion, five hundred fifty-six million, four hundred seventeen thousand, three hundred thirteen".