16966696815 has 48 divisors (see below), whose sum is σ = 30005849952. Its totient is φ = 8865722112.

The previous prime is 16966696811. The next prime is 16966696837. The reversal of 16966696815 is 51869666961.

It is not a de Polignac number, because 16966696815 - 2² = 16966696811 is a prime.

It is a super-2 number, since 2×16966696815² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16966696811) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1839004 + ... + 1848206.

It is an arithmetic number, because the mean of its divisors is an integer number (625121874).

Almost surely, 2^16966696815 is an apocalyptic number.

16966696815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16966696815 is a deficient number, since it is larger than the sum of its proper divisors (13039153137).

16966696815 is a wasteful number, since it uses less digits than its factorization.

16966696815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10040 (or 10037 counting only the distinct ones).

The product of its digits is 25194240, while the sum is 63.

The spelling of 16966696815 in words is "sixteen billion, nine hundred sixty-six million, six hundred ninety-six thousand, eight hundred fifteen".