16374951081 has 24 divisors (see below), whose sum is σ = 24261099720. Its totient is φ = 10639123200.

The previous prime is 16374951001. The next prime is 16374951097. The reversal of 16374951081 is 18015947361.

16374951081 is a `hidden beast` number, since 1 + 63 + 74 + 9 + 510 + 8 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 649791081 + 15725160000 = 25491^2 + 125400^2 .

It is not a de Polignac number, because 16374951081 - 2⁹ = 16374950569 is a prime.

It is a super-2 number, since 2×16374951081² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16374951001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 76980 + ... + 196661.

It is an arithmetic number, because the mean of its divisors is an integer number (1010879155).

Almost surely, 2^16374951081 is an apocalyptic number.

It is an amenable number.

16374951081 is a deficient number, since it is larger than the sum of its proper divisors (7886148639).

16374951081 is a wasteful number, since it uses less digits than its factorization.

16374951081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273817 (or 273814 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The spelling of 16374951081 in words is "sixteen billion, three hundred seventy-four million, nine hundred fifty-one thousand, eighty-one".