131447278515 has 32 divisors (see below), whose sum is σ = 242565903360. Its totient is φ = 59538893184.

The previous prime is 131447278489. The next prime is 131447278549. The reversal of 131447278515 is 515872744131.

It is not a de Polignac number, because 131447278515 - 2⁵ = 131447278483 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5731119 + ... + 5754008.

It is an arithmetic number, because the mean of its divisors is an integer number (7580184480).

Almost surely, 2^131447278515 is an apocalyptic number.

131447278515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

131447278515 is a deficient number, since it is larger than the sum of its proper divisors (111118624845).

131447278515 is a wasteful number, since it uses less digits than its factorization.

131447278515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11485251.

The product of its digits is 940800, while the sum is 48.

The spelling of 131447278515 in words is "one hundred thirty-one billion, four hundred forty-seven million, two hundred seventy-eight thousand, five hundred fifteen".