16135540564 has 24 divisors (see below), whose sum is σ = 33173769888. Its totient is φ = 6770156640.

The previous prime is 16135540511. The next prime is 16135540591. The reversal of 16135540564 is 46504553161.

It is a happy number.

It is a congruent 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, 14103922 + ... + 14105065.

It is an arithmetic number, because the mean of its divisors is an integer number (1382240412).

Almost surely, 2^16135540564 is an apocalyptic number.

It is an amenable number.

16135540564 is an abundant number, since it is smaller than the sum of its proper divisors (17038229324).

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

16135540564 is a wasteful number, since it uses less digits than its factorization.

16135540564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28209015 (or 28209013 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 40.

The spelling of 16135540564 in words is "sixteen billion, one hundred thirty-five million, five hundred forty thousand, five hundred sixty-four".