11315544345 has 32 divisors (see below), whose sum is σ = 22990314240. Its totient is φ = 5172819840.

The previous prime is 11315544337. The next prime is 11315544349. The reversal of 11315544345 is 54344551311.

It is not a de Polignac number, because 11315544345 - 2³ = 11315544337 is a prime.

It is a super-2 number, since 2×11315544345² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11315544349) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5986116 + ... + 5988005.

It is an arithmetic number, because the mean of its divisors is an integer number (718447320).

Almost surely, 2^11315544345 is an apocalyptic number.

11315544345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11315544345 is an abundant number, since it is smaller than the sum of its proper divisors (11674769895).

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

11315544345 is a wasteful number, since it uses less digits than its factorization.

11315544345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11974142 (or 11974136 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The spelling of 11315544345 in words is "eleven billion, three hundred fifteen million, five hundred forty-four thousand, three hundred forty-five".