131261144178 has 16 divisors (see below), whose sum is σ = 262537396416. Its totient is φ = 43751196720.

The previous prime is 131261144143. The next prime is 131261144191. The reversal of 131261144178 is 871441162131.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 514953 + ... + 726428.

It is an arithmetic number, because the mean of its divisors is an integer number (16408587276).

Almost surely, 2^131261144178 is an apocalyptic number.

131261144178 is an abundant number, since it is smaller than the sum of its proper divisors (131276252238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131261144178 is a wasteful number, since it uses less digits than its factorization.

131261144178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1259009.

The product of its digits is 32256, while the sum is 39.

The spelling of 131261144178 in words is "one hundred thirty-one billion, two hundred sixty-one million, one hundred forty-four thousand, one hundred seventy-eight".