115651621131 has 8 divisors (see below), whose sum is σ = 154248916800. Its totient is φ = 77077703112.

The previous prime is 115651621067. The next prime is 115651621153. The reversal of 115651621131 is 131126156511.

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

It is not a de Polignac number, because 115651621131 - 2⁶ = 115651621067 is a prime.

It is a super-2 number, since 2×115651621131² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 115651621092 and 115651621101.

It is not an unprimeable number, because it can be changed into a prime (115651626131) 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, 5832865 + ... + 5852658.

It is an arithmetic number, because the mean of its divisors is an integer number (19281114600).

Almost surely, 2^115651621131 is an apocalyptic number.

115651621131 is a deficient number, since it is larger than the sum of its proper divisors (38597295669).

115651621131 is a wasteful number, since it uses less digits than its factorization.

115651621131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11688825.

The product of its digits is 5400, while the sum is 33.

Adding to 115651621131 its reverse (131126156511), we get a palindrome (246777777642).

The spelling of 115651621131 in words is "one hundred fifteen billion, six hundred fifty-one million, six hundred twenty-one thousand, one hundred thirty-one".