16812951687 has 54 divisors (see below), whose sum is σ = 28413265608. Its totient is φ = 9552289824.

The previous prime is 16812951653. The next prime is 16812951707. The reversal of 16812951687 is 78615921861.

It is a happy number.

It is not a de Polignac number, because 16812951687 - 2¹⁴ = 16812935303 is a prime.

It is a super-2 number, since 2×16812951687² (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 (16812951607) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 23126118 + ... + 23126844.

Almost surely, 2^16812951687 is an apocalyptic number.

16812951687 is a deficient number, since it is larger than the sum of its proper divisors (11600313921).

16812951687 is an equidigital number, since it uses as much as digits as its factorization.

16812951687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205 (or 966 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 54.

The spelling of 16812951687 in words is "sixteen billion, eight hundred twelve million, nine hundred fifty-one thousand, six hundred eighty-seven".