78313077836 has 48 divisors (see below), whose sum is σ = 160422662400. Its totient is φ = 32758406208.

The previous prime is 78313077823. The next prime is 78313077839. The reversal of 78313077836 is 63877031387.

It is a super-2 number, since 2×78313077836² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78313077839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12995 + ... + 395973.

It is an arithmetic number, because the mean of its divisors is an integer number (3342138800).

Almost surely, 2^78313077836 is an apocalyptic number.

It is an amenable number.

78313077836 is an abundant number, since it is smaller than the sum of its proper divisors (82109584564).

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

78313077836 is a wasteful number, since it uses less digits than its factorization.

78313077836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383166 (or 383164 counting only the distinct ones).

The product of its (nonzero) digits is 3556224, while the sum is 53.

The spelling of 78313077836 in words is "seventy-eight billion, three hundred thirteen million, seventy-seven thousand, eight hundred thirty-six".