78295925888 has 32 divisors (see below), whose sum is σ = 155995765500. Its totient is φ = 39144047616.

The previous prime is 78295925881. The next prime is 78295925921. The reversal of 78295925888 is 88852959287.

It can be written as a sum of positive squares in 2 ways, for example, as 76224583744 + 2071342144 = 276088^2 + 45512^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×78295925888² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78295925881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1587098 + ... + 1635686.

Almost surely, 2^78295925888 is an apocalyptic number.

It is an amenable number.

78295925888 is a deficient number, since it is larger than the sum of its proper divisors (77699839612).

78295925888 is a wasteful number, since it uses less digits than its factorization.

78295925888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61192 (or 61180 counting only the distinct ones).

The product of its digits is 232243200, while the sum is 71.

The spelling of 78295925888 in words is "seventy-eight billion, two hundred ninety-five million, nine hundred twenty-five thousand, eight hundred eighty-eight".