8161874087125 has 128 divisors (see below), whose sum is σ = 12219754659840. Its totient is φ = 5376477600000.

The previous prime is 8161874087069. The next prime is 8161874087149. The reversal of 8161874087125 is 5217804781618.

It is not a de Polignac number, because 8161874087125 - 2¹³ = 8161874078933 is a prime.

It is a super-2 number, since 2×8161874087125² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8161874087125.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 67158915 + ... + 67280335.

It is an arithmetic number, because the mean of its divisors is an integer number (95466833280).

Almost surely, 2^{8161874087125} is an apocalyptic number.

It is an amenable number.

8161874087125 is a deficient number, since it is larger than the sum of its proper divisors (4057880572715).

8161874087125 is a wasteful number, since it uses less digits than its factorization.

8161874087125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121580 (or 121570 counting only the distinct ones).

The product of its (nonzero) digits is 6021120, while the sum is 58.

The spelling of 8161874087125 in words is "eight trillion, one hundred sixty-one billion, eight hundred seventy-four million, eighty-seven thousand, one hundred twenty-five".