131554612440 has 48 divisors (see below), whose sum is σ = 427552491600. Its totient is φ = 35081229888.

The previous prime is 131554612439. The next prime is 131554612577. The reversal of 131554612440 is 44216455131.

131554612440 is a `hidden beast` number, since 1 + 3 + 1 + 554 + 61 + 2 + 4 + 40 = 666.

131554612440 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 131554612395 and 131554612404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 182714380 + ... + 182715099.

It is an arithmetic number, because the mean of its divisors is an integer number (8907343575).

Almost surely, 2^131554612440 is an apocalyptic number.

131554612440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131554612440 is an abundant number, since it is smaller than the sum of its proper divisors (295997879160).

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

131554612440 is a wasteful number, since it uses less digits than its factorization.

131554612440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365429496 (or 365429489 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 131554612440 in words is "one hundred thirty-one billion, five hundred fifty-four million, six hundred twelve thousand, four hundred forty".