16390526550 has 24 divisors (see below), whose sum is σ = 40648506216. Its totient is φ = 4370807040.

The previous prime is 16390526549. The next prime is 16390526561. The reversal of 16390526550 is 5562509361.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54634939 + ... + 54635238.

It is an arithmetic number, because the mean of its divisors is an integer number (1693687759).

Almost surely, 2^16390526550 is an apocalyptic number.

16390526550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16390526550 is an abundant number, since it is smaller than the sum of its proper divisors (24257979666).

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

16390526550 is a wasteful number, since it uses less digits than its factorization.

16390526550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109270192 (or 109270187 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 42.

The spelling of 16390526550 in words is "sixteen billion, three hundred ninety million, five hundred twenty-six thousand, five hundred fifty".