16405162131 has 8 divisors (see below), whose sum is σ = 21874142160. Its totient is φ = 10936478432.

The previous prime is 16405162127. The next prime is 16405162139. The reversal of 16405162131 is 13126150461.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16405162131 - 2² = 16405162127 is a prime.

It is a super-2 number, since 2×16405162131² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16405162139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169705 + ... + 248213.

It is an arithmetic number, because the mean of its divisors is an integer number (2734267770).

Almost surely, 2^16405162131 is an apocalyptic number.

16405162131 is a deficient number, since it is larger than the sum of its proper divisors (5468980029).

16405162131 is an equidigital number, since it uses as much as digits as its factorization.

16405162131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148165.

The product of its (nonzero) digits is 4320, while the sum is 30.

The spelling of 16405162131 in words is "sixteen billion, four hundred five million, one hundred sixty-two thousand, one hundred thirty-one".