78564025486 has 8 divisors (see below), whose sum is σ = 117864274680. Its totient is φ = 39275933928.

The previous prime is 78564025457. The next prime is 78564025489. The reversal of 78564025486 is 68452046587.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×78564025486² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78564025489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3023236 + ... + 3049111.

It is an arithmetic number, because the mean of its divisors is an integer number (14733034335).

Almost surely, 2^78564025486 is an apocalyptic number.

78564025486 is a deficient number, since it is larger than the sum of its proper divisors (39300249194).

78564025486 is a wasteful number, since it uses less digits than its factorization.

78564025486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6078818.

The product of its (nonzero) digits is 12902400, while the sum is 55.

The spelling of 78564025486 in words is "seventy-eight billion, five hundred sixty-four million, twenty-five thousand, four hundred eighty-six".