78564830778583 has 8 divisors (see below), whose sum is σ = 79262315352000. Its totient is φ = 77867385163008.

The previous prime is 78564830778541. The next prime is 78564830778617. The reversal of 78564830778583 is 38587703846587.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78564830778583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78564830778383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5680758 + ... + 13762291.

It is an arithmetic number, because the mean of its divisors is an integer number (9907789419000).

Almost surely, 2^{78564830778583} is an apocalyptic number.

78564830778583 is a deficient number, since it is larger than the sum of its proper divisors (697484573417).

78564830778583 is a wasteful number, since it uses less digits than its factorization.

78564830778583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19478921.

The product of its (nonzero) digits is 7586611200, while the sum is 79.

The spelling of 78564830778583 in words is "seventy-eight trillion, five hundred sixty-four billion, eight hundred thirty million, seven hundred seventy-eight thousand, five hundred eighty-three".