16249272858 has 96 divisors (see below), whose sum is σ = 43942010112. Its totient is φ = 4225132800.

The previous prime is 16249272839. The next prime is 16249272863. The reversal of 16249272858 is 85827294261.

16249272858 is a `hidden beast` number, since 1 + 6 + 2 + 492 + 72 + 85 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 46438 + ... + 186158.

It is an arithmetic number, because the mean of its divisors is an integer number (457729272).

Almost surely, 2^16249272858 is an apocalyptic number.

16249272858 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16249272858, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21971005056).

16249272858 is an abundant number, since it is smaller than the sum of its proper divisors (27692737254).

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

16249272858 is a wasteful number, since it uses less digits than its factorization.

16249272858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139820 (or 139817 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The spelling of 16249272858 in words is "sixteen billion, two hundred forty-nine million, two hundred seventy-two thousand, eight hundred fifty-eight".