78077409464 has 16 divisors (see below), whose sum is σ = 155006622000. Its totient is φ = 36742310272.

The previous prime is 78077409383. The next prime is 78077409497. The reversal of 78077409464 is 46490477087.

It is a happy number.

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, 287049164 + ... + 287049435.

It is an arithmetic number, because the mean of its divisors is an integer number (9687913875).

Almost surely, 2^78077409464 is an apocalyptic number.

It is an amenable number.

78077409464 is a deficient number, since it is larger than the sum of its proper divisors (76929212536).

78077409464 is a wasteful number, since it uses less digits than its factorization.

78077409464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574098622 (or 574098618 counting only the distinct ones).

The product of its (nonzero) digits is 9483264, while the sum is 56.

The spelling of 78077409464 in words is "seventy-eight billion, seventy-seven million, four hundred nine thousand, four hundred sixty-four".