78715454582 has 8 divisors (see below), whose sum is σ = 120585377376. Its totient is φ = 38520328792.

The previous prime is 78715454563. The next prime is 78715454591. The reversal of 78715454582 is 28545451787.

It is a happy number.

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

It is a super-2 number, since 2×78715454582² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 418699133 + ... + 418699320.

It is an arithmetic number, because the mean of its divisors is an integer number (15073172172).

Almost surely, 2^78715454582 is an apocalyptic number.

78715454582 is a deficient number, since it is larger than the sum of its proper divisors (41869922794).

78715454582 is a wasteful number, since it uses less digits than its factorization.

78715454582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837398502.

The product of its digits is 12544000, while the sum is 56.

The spelling of 78715454582 in words is "seventy-eight billion, seven hundred fifteen million, four hundred fifty-four thousand, five hundred eighty-two".