16405911036 has 36 divisors (see below), whose sum is σ = 41678910000. Its totient is φ = 5441154048.

The previous prime is 16405910977. The next prime is 16405911077. The reversal of 16405911036 is 63011950461.

16405911036 is a `hidden beast` number, since 1 + 64 + 0 + 591 + 1 + 0 + 3 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×16405911036² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent 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, 1137861 + ... + 1152188.

It is an arithmetic number, because the mean of its divisors is an integer number (1157747500).

Almost surely, 2^16405911036 is an apocalyptic number.

It is an amenable number.

16405911036 is an abundant number, since it is smaller than the sum of its proper divisors (25272998964).

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

16405911036 is a wasteful number, since it uses less digits than its factorization.

16405911036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2290258 (or 2290253 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The spelling of 16405911036 in words is "sixteen billion, four hundred five million, nine hundred eleven thousand, thirty-six".