16812536251 has 16 divisors (see below), whose sum is σ = 21104985600. Its totient is φ = 13058705088.

The previous prime is 16812536233. The next prime is 16812536269. The reversal of 16812536251 is 15263521861.

It is an interprime number because it is at equal distance from previous prime (16812536233) and next prime (16812536269).

It is a cyclic number.

It is not a de Polignac number, because 16812536251 - 2¹⁵ = 16812503483 is a prime.

It is a super-2 number, since 2×16812536251² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16812536231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2744986 + ... + 2751103.

It is an arithmetic number, because the mean of its divisors is an integer number (1319061600).

Almost surely, 2^16812536251 is an apocalyptic number.

16812536251 is a deficient number, since it is larger than the sum of its proper divisors (4292449349).

16812536251 is a wasteful number, since it uses less digits than its factorization.

16812536251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5496138.

The product of its digits is 86400, while the sum is 40.

The spelling of 16812536251 in words is "sixteen billion, eight hundred twelve million, five hundred thirty-six thousand, two hundred fifty-one".