78112975 has 6 divisors (see below), whose sum is σ = 96860120. Its totient is φ = 62490360.

The previous prime is 78112973. The next prime is 78112981. The reversal of 78112975 is 57921187.

It is not a de Polignac number, because 78112975 - 2¹ = 78112973 is a prime.

It is a super-2 number, since 2×78112975² = 12203273726701250, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78112973) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1562235 + ... + 1562284.

Almost surely, 2^78112975 is an apocalyptic number.

78112975 is a deficient number, since it is larger than the sum of its proper divisors (18747145).

78112975 is a wasteful number, since it uses less digits than its factorization.

78112975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3124529 (or 3124524 counting only the distinct ones).

The product of its digits is 35280, while the sum is 40.

The square root of 78112975 is about 8838.1545019308. The cubic root of 78112975 is about 427.4720522523.

The spelling of 78112975 in words is "seventy-eight million, one hundred twelve thousand, nine hundred seventy-five".