16535206464 has 112 divisors (see below), whose sum is σ = 51350802048. Its totient is φ = 4596645888.

The previous prime is 16535206403. The next prime is 16535206477. The reversal of 16535206464 is 46460253561.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116529 + ... + 215984.

It is an arithmetic number, because the mean of its divisors is an integer number (458489304).

Almost surely, 2^16535206464 is an apocalyptic number.

16535206464 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

16535206464 is an abundant number, since it is smaller than the sum of its proper divisors (34815595584).

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

16535206464 is a wasteful number, since it uses less digits than its factorization.

16535206464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332572 (or 332562 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 16535206464 in words is "sixteen billion, five hundred thirty-five million, two hundred six thousand, four hundred sixty-four".