16708625431 has 4 divisors (see below), whose sum is σ = 16728541200. Its totient is φ = 16688709664.

The previous prime is 16708625393. The next prime is 16708625497. The reversal of 16708625431 is 13452680761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13452680761 = 13 ⋅1034821597.

It is a cyclic number.

It is not a de Polignac number, because 16708625431 - 2²⁹ = 16171754519 is a prime.

It is a super-2 number, since 2×16708625431² (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 (16708620431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9956626 + ... + 9958303.

It is an arithmetic number, because the mean of its divisors is an integer number (4182135300).

Almost surely, 2^16708625431 is an apocalyptic number.

16708625431 is a deficient number, since it is larger than the sum of its proper divisors (19915769).

16708625431 is an equidigital number, since it uses as much as digits as its factorization.

16708625431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19915768.

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 16708625431 in words is "sixteen billion, seven hundred eight million, six hundred twenty-five thousand, four hundred thirty-one".