11621385375513 has 32 divisors (see below), whose sum is σ = 15943847673600. Its totient is φ = 7525011072000.

The previous prime is 11621385375451. The next prime is 11621385375517. The reversal of 11621385375513 is 31557358312611.

It is not a de Polignac number, because 11621385375513 - 2²¹ = 11621383278361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11621385375517) 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, 26319403 + ... + 26757311.

It is an arithmetic number, because the mean of its divisors is an integer number (498245239800).

Almost surely, 2^{11621385375513} is an apocalyptic number.

It is an amenable number.

11621385375513 is a deficient number, since it is larger than the sum of its proper divisors (4322462298087).

11621385375513 is a wasteful number, since it uses less digits than its factorization.

11621385375513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438913.

The product of its digits is 2268000, while the sum is 51.

The spelling of 11621385375513 in words is "eleven trillion, six hundred twenty-one billion, three hundred eighty-five million, three hundred seventy-five thousand, five hundred thirteen".