16461991135 has 16 divisors (see below), whose sum is σ = 20616975360. Its totient is φ = 12594741280.

The previous prime is 16461991033. The next prime is 16461991211. The reversal of 16461991135 is 53119916461.

It is a de Polignac number, because none of the positive numbers 2^k-16461991135 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 930906 + ... + 948424.

It is an arithmetic number, because the mean of its divisors is an integer number (1288560960).

Almost surely, 2^16461991135 is an apocalyptic number.

16461991135 is a deficient number, since it is larger than the sum of its proper divisors (4154984225).

16461991135 is a wasteful number, since it uses less digits than its factorization.

16461991135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25718.

The product of its digits is 174960, while the sum is 46.

The spelling of 16461991135 in words is "sixteen billion, four hundred sixty-one million, nine hundred ninety-one thousand, one hundred thirty-five".