16139787858 has 48 divisors (see below), whose sum is σ = 36126604800. Its totient is φ = 5202198720.

The previous prime is 16139787841. The next prime is 16139787863. The reversal of 16139787858 is 85878793161.

16139787858 is a `hidden beast` number, since 1 + 613 + 9 + 7 + 8 + 7 + 8 + 5 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 16139787795 and 16139787804.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 725038 + ... + 746966.

It is an arithmetic number, because the mean of its divisors is an integer number (752637600).

Almost surely, 2^16139787858 is an apocalyptic number.

16139787858 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

16139787858 is an abundant number, since it is smaller than the sum of its proper divisors (19986816942).

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

16139787858 is a wasteful number, since it uses less digits than its factorization.

16139787858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23287 (or 23284 counting only the distinct ones).

The product of its digits is 20321280, while the sum is 63.

The spelling of 16139787858 in words is "sixteen billion, one hundred thirty-nine million, seven hundred eighty-seven thousand, eight hundred fifty-eight".