16390772874 has 32 divisors (see below), whose sum is σ = 41627360640. Its totient is φ = 4683077856.

The previous prime is 16390772873. The next prime is 16390772897. The reversal of 16390772874 is 47827709361.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 16390772874.

It is not an unprimeable number, because it can be changed into a prime (16390772873) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21680539 + ... + 21681294.

It is an arithmetic number, because the mean of its divisors is an integer number (1300855020).

Almost surely, 2^16390772874 is an apocalyptic number.

16390772874 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

16390772874 is an abundant number, since it is smaller than the sum of its proper divisors (25236587766).

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

16390772874 is a wasteful number, since it uses less digits than its factorization.

16390772874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43361851 (or 43361845 counting only the distinct ones).

The product of its (nonzero) digits is 3556224, while the sum is 54.

The spelling of 16390772874 in words is "sixteen billion, three hundred ninety million, seven hundred seventy-two thousand, eight hundred seventy-four".