16534235990 has 16 divisors (see below), whose sum is σ = 30039772752. Its totient is φ = 6551883744.

The previous prime is 16534235951. The next prime is 16534235999. The reversal of 16534235990 is 9953243561.

It is a super-2 number, since 2×16534235990² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16534235999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7725209 + ... + 7727348.

It is an arithmetic number, because the mean of its divisors is an integer number (1877485797).

Almost surely, 2^16534235990 is an apocalyptic number.

16534235990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16534235990 is a deficient number, since it is larger than the sum of its proper divisors (13505536762).

16534235990 is a wasteful number, since it uses less digits than its factorization.

16534235990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15452671.

The product of its (nonzero) digits is 874800, while the sum is 47.

The spelling of 16534235990 in words is "sixteen billion, five hundred thirty-four million, two hundred thirty-five thousand, nine hundred ninety".