78011975 has 24 divisors (see below), whose sum is σ = 101576832. Its totient is φ = 59320800.

The previous prime is 78011953. The next prime is 78011987. The reversal of 78011975 is 57911087.

It is not a de Polignac number, because 78011975 - 2⁶ = 78011911 is a prime.

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, 121004 + ... + 121646.

It is an arithmetic number, because the mean of its divisors is an integer number (4232368).

Almost surely, 2^78011975 is an apocalyptic number.

78011975 is a deficient number, since it is larger than the sum of its proper divisors (23564857).

78011975 is a wasteful number, since it uses less digits than its factorization.

78011975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887 (or 882 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 38.

The square root of 78011975 is about 8832.4387911833. The cubic root of 78011975 is about 427.2877324730.

The spelling of 78011975 in words is "seventy-eight million, eleven thousand, nine hundred seventy-five".