131621082501 has 16 divisors (see below), whose sum is σ = 185368832000. Its totient is φ = 82942014960.

The previous prime is 131621082497. The next prime is 131621082511. The reversal of 131621082501 is 105280126131.

It is not a de Polignac number, because 131621082501 - 2² = 131621082497 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131621082511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16452751 + ... + 16460748.

It is an arithmetic number, because the mean of its divisors is an integer number (11585552000).

Almost surely, 2^131621082501 is an apocalyptic number.

It is an amenable number.

131621082501 is a deficient number, since it is larger than the sum of its proper divisors (53747749499).

131621082501 is a wasteful number, since it uses less digits than its factorization.

131621082501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32913576.

The product of its (nonzero) digits is 2880, while the sum is 30.

The spelling of 131621082501 in words is "one hundred thirty-one billion, six hundred twenty-one million, eighty-two thousand, five hundred one".