77999103020 has 48 divisors (see below), whose sum is σ = 166638771936. Its totient is φ = 30659520000.

The previous prime is 77999103019. The next prime is 77999103023. The reversal of 77999103020 is 2030199977.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (77999103023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1301720 + ... + 1360320.

It is an arithmetic number, because the mean of its divisors is an integer number (3471641082).

Almost surely, 2^77999103020 is an apocalyptic number.

It is an amenable number.

77999103020 is an abundant number, since it is smaller than the sum of its proper divisors (88639668916).

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

77999103020 is a wasteful number, since it uses less digits than its factorization.

77999103020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59762 (or 59760 counting only the distinct ones).

The product of its (nonzero) digits is 214326, while the sum is 47.

The spelling of 77999103020 in words is "seventy-seven billion, nine hundred ninety-nine million, one hundred three thousand, twenty".