16356941640 has 96 divisors (see below), whose sum is σ = 57249312120. Its totient is φ = 4026322944.

The previous prime is 16356941501. The next prime is 16356941669. The reversal of 16356941640 is 4614965361.

16356941640 is a `hidden beast` number, since 1 + 6 + 3 + 569 + 41 + 6 + 40 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 10698592356 + 5658349284 = 103434^2 + 75222^2 .

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1742857 + ... + 1752216.

Almost surely, 2^16356941640 is an apocalyptic number.

16356941640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16356941640 is an abundant number, since it is smaller than the sum of its proper divisors (40892370480).

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

16356941640 is a wasteful number, since it uses less digits than its factorization.

16356941640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3495103 (or 3495096 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

It can be divided in two parts, 163569 and 41640, that added together give a square (205209 = 453²).

The spelling of 16356941640 in words is "sixteen billion, three hundred fifty-six million, nine hundred forty-one thousand, six hundred forty".