16391431752 has 32 divisors (see below), whose sum is σ = 40990620480. Its totient is φ = 5462205120.

The previous prime is 16391431747. The next prime is 16391431783. The reversal of 16391431752 is 25713419361.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15499 + ... + 181722.

It is an arithmetic number, because the mean of its divisors is an integer number (1280956890).

Almost surely, 2^16391431752 is an apocalyptic number.

16391431752 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16391431752 is an abundant number, since it is smaller than the sum of its proper divisors (24599188728).

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

16391431752 is a wasteful number, since it uses less digits than its factorization.

16391431752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200693 (or 200689 counting only the distinct ones).

The product of its digits is 136080, while the sum is 42.

The spelling of 16391431752 in words is "sixteen billion, three hundred ninety-one million, four hundred thirty-one thousand, seven hundred fifty-two".