16671954325 has 24 divisors (see below), whose sum is σ = 22296651048. Its totient is φ = 12293249280.

The previous prime is 16671954311. The next prime is 16671954359. The reversal of 16671954325 is 52345917661.

It can be written as a sum of positive squares in 12 ways, for example, as 7410971569 + 9260982756 = 86087^2 + 96234^2 .

It is not a de Polignac number, because 16671954325 - 2¹¹ = 16671952277 is a prime.

It is a super-2 number, since 2×16671954325² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 182139 + ... + 257911.

It is an arithmetic number, because the mean of its divisors is an integer number (929027127).

Almost surely, 2^16671954325 is an apocalyptic number.

It is an amenable number.

16671954325 is a deficient number, since it is larger than the sum of its proper divisors (5624696723).

16671954325 is a wasteful number, since it uses less digits than its factorization.

16671954325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76473 (or 76468 counting only the distinct ones).

The product of its digits is 1360800, while the sum is 49.

The spelling of 16671954325 in words is "sixteen billion, six hundred seventy-one million, nine hundred fifty-four thousand, three hundred twenty-five".