16131602540 has 24 divisors (see below), whose sum is σ = 33911952480. Its totient is φ = 6445862528.

The previous prime is 16131602533. The next prime is 16131602567. The reversal of 16131602540 is 4520613161.

It is a happy number.

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, 404120 + ... + 442239.

It is an arithmetic number, because the mean of its divisors is an integer number (1412998020).

Almost surely, 2^16131602540 is an apocalyptic number.

16131602540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16131602540 is an abundant number, since it is smaller than the sum of its proper divisors (17780349940).

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

16131602540 is a wasteful number, since it uses less digits than its factorization.

16131602540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847321 (or 847319 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The spelling of 16131602540 in words is "sixteen billion, one hundred thirty-one million, six hundred two thousand, five hundred forty".