16312636540 has 12 divisors (see below), whose sum is σ = 34256536776. Its totient is φ = 6525054608.

The previous prime is 16312636519. The next prime is 16312636577. The reversal of 16312636540 is 4563621361.

It is a super-2 number, since 2×16312636540² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16312636540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 407815894 + ... + 407815933.

It is an arithmetic number, because the mean of its divisors is an integer number (2854711398).

Almost surely, 2^16312636540 is an apocalyptic number.

16312636540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16312636540 is an abundant number, since it is smaller than the sum of its proper divisors (17943900236).

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

16312636540 is a wasteful number, since it uses less digits than its factorization.

16312636540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815631836 (or 815631834 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 37.

The spelling of 16312636540 in words is "sixteen billion, three hundred twelve million, six hundred thirty-six thousand, five hundred forty".