16405601906952 has 48 divisors (see below), whose sum is σ = 44444949763500. Its totient is φ = 5466920274816.

The previous prime is 16405601906927. The next prime is 16405601906987. The reversal of 16405601906952 is 25960910650461.

16405601906952 is a `hidden beast` number, since 1 + 6 + 4 + 0 + 560 + 19 + 0 + 69 + 5 + 2 = 666.

16405601906952 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 16190274353796 + 215327553156 = 4023714^2 + 464034^2 .

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, 33372927 + ... + 33860942.

Almost surely, 2^{16405601906952} is an apocalyptic number.

16405601906952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16405601906952 is an abundant number, since it is smaller than the sum of its proper divisors (28039347856548).

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

16405601906952 is a wasteful number, since it uses less digits than its factorization.

16405601906952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67237270 (or 67237263 counting only the distinct ones).

The product of its (nonzero) digits is 3499200, while the sum is 54.

The spelling of 16405601906952 in words is "sixteen trillion, four hundred five billion, six hundred one million, nine hundred six thousand, nine hundred fifty-two".