16534344390 has 32 divisors (see below), whose sum is σ = 40241339136. Its totient is φ = 4347057120.

The previous prime is 16534344371. The next prime is 16534344457. The reversal of 16534344390 is 9344343561.

It is a congruent number.

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, 3879172 + ... + 3883431.

It is an arithmetic number, because the mean of its divisors is an integer number (1257541848).

Almost surely, 2^16534344390 is an apocalyptic number.

16534344390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16534344390 is an abundant number, since it is smaller than the sum of its proper divisors (23706994746).

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

16534344390 is a wasteful number, since it uses less digits than its factorization.

16534344390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7762684.

The product of its (nonzero) digits is 466560, while the sum is 42.

The spelling of 16534344390 in words is "sixteen billion, five hundred thirty-four million, three hundred forty-four thousand, three hundred ninety".