78465274457584 has 40 divisors (see below), whose sum is σ = 173749198724480. Its totient is φ = 33627072362688.

The previous prime is 78465274457551. The next prime is 78465274457593. The reversal of 78465274457584 is 48575447256487.

It is a self number, because there is not a number n which added to its sum of digits gives 78465274457584.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5199414 + ... + 13563349.

It is an arithmetic number, because the mean of its divisors is an integer number (4343729968112).

Almost surely, 2^{78465274457584} is an apocalyptic number.

It is an amenable number.

78465274457584 is an abundant number, since it is smaller than the sum of its proper divisors (95283924266896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78465274457584 is a wasteful number, since it uses less digits than its factorization.

78465274457584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18800117 (or 18800111 counting only the distinct ones).

The product of its digits is 8429568000, while the sum is 76.

The spelling of 78465274457584 in words is "seventy-eight trillion, four hundred sixty-five billion, two hundred seventy-four million, four hundred fifty-seven thousand, five hundred eighty-four".