11513023545 has 8 divisors (see below), whose sum is σ = 18420837696. Its totient is φ = 6140279216.

The previous prime is 11513023517. The next prime is 11513023559. The reversal of 11513023545 is 54532031511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11513023545 - 2⁸ = 11513023289 is a prime.

It is a super-2 number, since 2×11513023545² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 383767437 + ... + 383767466.

It is an arithmetic number, because the mean of its divisors is an integer number (2302604712).

Almost surely, 2^11513023545 is an apocalyptic number.

11513023545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11513023545 is a deficient number, since it is larger than the sum of its proper divisors (6907814151).

11513023545 is an equidigital number, since it uses as much as digits as its factorization.

11513023545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767534911.

The product of its (nonzero) digits is 9000, while the sum is 30.

The spelling of 11513023545 in words is "eleven billion, five hundred thirteen million, twenty-three thousand, five hundred forty-five".