131516554007 has 4 divisors (see below), whose sum is σ = 131521062360. Its totient is φ = 131512045656.

The previous prime is 131516554003. The next prime is 131516554021. The reversal of 131516554007 is 700455615131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 700455615131 = 4519 ⋅155002349.

It is a cyclic number.

It is not a de Polignac number, because 131516554007 - 2² = 131516554003 is a prime.

It is a super-2 number, since 2×131516554007² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131516554003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2210132 + ... + 2268857.

It is an arithmetic number, because the mean of its divisors is an integer number (32880265590).

Almost surely, 2^131516554007 is an apocalyptic number.

131516554007 is a deficient number, since it is larger than the sum of its proper divisors (4508353).

131516554007 is an equidigital number, since it uses as much as digits as its factorization.

131516554007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4508352.

The product of its (nonzero) digits is 63000, while the sum is 38.

The spelling of 131516554007 in words is "one hundred thirty-one billion, five hundred sixteen million, five hundred fifty-four thousand, seven".