16870516831 has 16 divisors (see below), whose sum is σ = 20420562240. Its totient is φ = 13605949440.

The previous prime is 16870516829. The next prime is 16870516847. The reversal of 16870516831 is 13861507861.

It is a cyclic number.

It is not a de Polignac number, because 16870516831 - 2¹ = 16870516829 is a prime.

It is a super-2 number, since 2×16870516831² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16870516891) 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, 443575 + ... + 480103.

It is an arithmetic number, because the mean of its divisors is an integer number (1276285140).

Almost surely, 2^16870516831 is an apocalyptic number.

16870516831 is a deficient number, since it is larger than the sum of its proper divisors (3550045409).

16870516831 is a wasteful number, since it uses less digits than its factorization.

16870516831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40434.

The product of its (nonzero) digits is 241920, while the sum is 46.

The spelling of 16870516831 in words is "sixteen billion, eight hundred seventy million, five hundred sixteen thousand, eight hundred thirty-one".