16535531234 has 16 divisors (see below), whose sum is σ = 25390411200. Its totient is φ = 8072216880.

The previous prime is 16535531209. The next prime is 16535531249. The reversal of 16535531234 is 43213553561.

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, 181499 + ... + 256929.

It is an arithmetic number, because the mean of its divisors is an integer number (1586900700).

Almost surely, 2^16535531234 is an apocalyptic number.

16535531234 is a deficient number, since it is larger than the sum of its proper divisors (8854879966).

16535531234 is a wasteful number, since it uses less digits than its factorization.

16535531234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78025.

The product of its digits is 162000, while the sum is 38.

The spelling of 16535531234 in words is "sixteen billion, five hundred thirty-five million, five hundred thirty-one thousand, two hundred thirty-four".