11613540631651 has 24 divisors (see below), whose sum is σ = 13616123811840. Its totient is φ = 9876031074000.

The previous prime is 11613540631619. The next prime is 11613540631661. The reversal of 11613540631651 is 15613604531611.

It is not a de Polignac number, because 11613540631651 - 2⁵ = 11613540631619 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11613540631598 and 11613540631607.

It is not an unprimeable number, because it can be changed into a prime (11613540631661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25961326 + ... + 26404876.

It is an arithmetic number, because the mean of its divisors is an integer number (567338492160).

Almost surely, 2^{11613540631651} is an apocalyptic number.

11613540631651 is a deficient number, since it is larger than the sum of its proper divisors (2002583180189).

11613540631651 is a wasteful number, since it uses less digits than its factorization.

11613540631651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447775 (or 447768 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 43.

The spelling of 11613540631651 in words is "eleven trillion, six hundred thirteen billion, five hundred forty million, six hundred thirty-one thousand, six hundred fifty-one".