78533386077 has 16 divisors (see below), whose sum is σ = 105898856960. Its totient is φ = 51763398192.

The previous prime is 78533386067. The next prime is 78533386079. The reversal of 78533386077 is 77068333587.

It is not a de Polignac number, because 78533386077 - 2²⁴ = 78516608861 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 (78533386079) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14023 + ... + 396564.

It is an arithmetic number, because the mean of its divisors is an integer number (6618678560).

Almost surely, 2^78533386077 is an apocalyptic number.

It is an amenable number.

78533386077 is a deficient number, since it is larger than the sum of its proper divisors (27365470883).

78533386077 is a wasteful number, since it uses less digits than its factorization.

78533386077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411312.

The product of its (nonzero) digits is 17781120, while the sum is 57.

The spelling of 78533386077 in words is "seventy-eight billion, five hundred thirty-three million, three hundred eighty-six thousand, seventy-seven".