77356845032078 has 4 divisors (see below), whose sum is σ = 116035267548120. Its totient is φ = 38678422516038.

The previous prime is 77356845032023. The next prime is 77356845032083. The reversal of 77356845032078 is 87023054865377.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19339211258018 + ... + 19339211258021.

It is an arithmetic number, because the mean of its divisors is an integer number (29008816887030).

Almost surely, 2^{77356845032078} is an apocalyptic number.

77356845032078 is a deficient number, since it is larger than the sum of its proper divisors (38678422516042).

77356845032078 is a wasteful number, since it uses less digits than its factorization.

77356845032078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38678422516041.

The product of its (nonzero) digits is 237081600, while the sum is 65.

The spelling of 77356845032078 in words is "seventy-seven trillion, three hundred fifty-six billion, eight hundred forty-five million, thirty-two thousand, seventy-eight".