11515331315983 has 8 divisors (see below), whose sum is σ = 12571925311440. Its totient is φ = 10460361602880.

The previous prime is 11515331315977. The next prime is 11515331315989. The reversal of 11515331315983 is 38951313351511.

It is an interprime number because it is at equal distance from previous prime (11515331315977) and next prime (11515331315989).

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 11515331315983 - 2⁵ = 11515331315951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11515331315989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 406055760 + ... + 406084117.

It is an arithmetic number, because the mean of its divisors is an integer number (1571490663930).

Almost surely, 2^{11515331315983} is an apocalyptic number.

11515331315983 is a deficient number, since it is larger than the sum of its proper divisors (1056593995457).

11515331315983 is a wasteful number, since it uses less digits than its factorization.

11515331315983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812141177.

The product of its digits is 729000, while the sum is 49.

The spelling of 11515331315983 in words is "eleven trillion, five hundred fifteen billion, three hundred thirty-one million, three hundred fifteen thousand, nine hundred eighty-three".