11618311728831 has 16 divisors (see below), whose sum is σ = 15620468195424. Its totient is φ = 7681101410304.

The previous prime is 11618311728823. The next prime is 11618311728839. The reversal of 11618311728831 is 13882711381611.

It is an interprime number because it is at equal distance from previous prime (11618311728823) and next prime (11618311728839).

It is not a de Polignac number, because 11618311728831 - 2³ = 11618311728823 is a prime.

It is a super-2 number, since 2×11618311728831² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11618311728839) 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, 31466566 + ... + 31833651.

It is an arithmetic number, because the mean of its divisors is an integer number (976279262214).

Almost surely, 2^{11618311728831} is an apocalyptic number.

11618311728831 is a deficient number, since it is larger than the sum of its proper divisors (4002156466593).

11618311728831 is a wasteful number, since it uses less digits than its factorization.

11618311728831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63300730.

The product of its digits is 387072, while the sum is 51.

The spelling of 11618311728831 in words is "eleven trillion, six hundred eighteen billion, three hundred eleven million, seven hundred twenty-eight thousand, eight hundred thirty-one".