77913234770 has 16 divisors (see below), whose sum is σ = 160278654528. Its totient is φ = 26713109040.

The previous prime is 77913234757. The next prime is 77913234793. The reversal of 77913234770 is 7743231977.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 556523036 + ... + 556523175.

It is an arithmetic number, because the mean of its divisors is an integer number (10017415908).

Almost surely, 2^77913234770 is an apocalyptic number.

77913234770 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

77913234770 is an abundant number, since it is smaller than the sum of its proper divisors (82365419758).

77913234770 is a wasteful number, since it uses less digits than its factorization.

77913234770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113046225.

The product of its (nonzero) digits is 1555848, while the sum is 50.

The spelling of 77913234770 in words is "seventy-seven billion, nine hundred thirteen million, two hundred thirty-four thousand, seven hundred seventy".