16158578232 has 16 divisors (see below), whose sum is σ = 40396445640. Its totient is φ = 5386192736.

The previous prime is 16158578221. The next prime is 16158578279. The reversal of 16158578232 is 23287585161.

It is a super-2 number, since 2×16158578232² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336637023 + ... + 336637070.

Almost surely, 2^16158578232 is an apocalyptic number.

16158578232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16158578232 is an abundant number, since it is smaller than the sum of its proper divisors (24237867408).

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

16158578232 is a wasteful number, since it uses less digits than its factorization.

16158578232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673274102 (or 673274098 counting only the distinct ones).

The product of its digits is 806400, while the sum is 48.

The spelling of 16158578232 in words is "sixteen billion, one hundred fifty-eight million, five hundred seventy-eight thousand, two hundred thirty-two".