14561994690 has 24 divisors (see below), whose sum is σ = 37861186428. Its totient is φ = 3883198560.

The previous prime is 14561994679. The next prime is 14561994703. The reversal of 14561994690 is 9649916541.

14561994690 is a `hidden beast` number, since 1 + 456 + 19 + 94 + 6 + 90 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 14517599121 + 44395569 = 120489^2 + 6663^2 .

It is a super-2 number, since 2×14561994690² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80899881 + ... + 80900060.

Almost surely, 2^14561994690 is an apocalyptic number.

14561994690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

14561994690 is an abundant number, since it is smaller than the sum of its proper divisors (23299191738).

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

14561994690 is a wasteful number, since it uses less digits than its factorization.

14561994690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161799954 (or 161799951 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 54.

The spelling of 14561994690 in words is "fourteen billion, five hundred sixty-one million, nine hundred ninety-four thousand, six hundred ninety".