16161101640 has 64 divisors (see below), whose sum is σ = 53870342400. Its totient is φ = 4309626816.

The previous prime is 16161101611. The next prime is 16161101657. The reversal of 16161101640 is 4610116161.

It is a happy number.

16161101640 is a `hidden beast` number, since 1 + 6 + 1 + 6 + 1 + 10 + 1 + 640 = 666.

16161101640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×16161101640² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7480912 + ... + 7483071.

It is an arithmetic number, because the mean of its divisors is an integer number (841724100).

Almost surely, 2^16161101640 is an apocalyptic number.

16161101640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16161101640 is an abundant number, since it is smaller than the sum of its proper divisors (37709240760).

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

16161101640 is a wasteful number, since it uses less digits than its factorization.

16161101640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14964003 (or 14963993 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The spelling of 16161101640 in words is "sixteen billion, one hundred sixty-one million, one hundred one thousand, six hundred forty".