16491195156 has 24 divisors (see below), whose sum is σ = 38526925024. Its totient is φ = 5490283680.

The previous prime is 16491195131. The next prime is 16491195157. The reversal of 16491195156 is 65159119461.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16491195157) 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, 837535 + ... + 856998.

Almost surely, 2^16491195156 is an apocalyptic number.

It is an amenable number.

16491195156 is an abundant number, since it is smaller than the sum of its proper divisors (22035729868).

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

16491195156 is a wasteful number, since it uses less digits than its factorization.

16491195156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1695351 (or 1695349 counting only the distinct ones).

The product of its digits is 291600, while the sum is 48.

The spelling of 16491195156 in words is "sixteen billion, four hundred ninety-one million, one hundred ninety-five thousand, one hundred fifty-six".