77693007770 has 16 divisors (see below), whose sum is σ = 159825616128. Its totient is φ = 26637602640.

The previous prime is 77693007739. The next prime is 77693007773. The reversal of 77693007770 is 7770039677.

It is not an unprimeable number, because it can be changed into a prime (77693007773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 554949986 + ... + 554950125.

It is an arithmetic number, because the mean of its divisors is an integer number (9989101008).

Almost surely, 2^77693007770 is an apocalyptic number.

77693007770 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

77693007770 is an abundant number, since it is smaller than the sum of its proper divisors (82132608358).

77693007770 is a wasteful number, since it uses less digits than its factorization.

77693007770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109900125.

The product of its (nonzero) digits is 2722734, while the sum is 53.

The spelling of 77693007770 in words is "seventy-seven billion, six hundred ninety-three million, seven thousand, seven hundred seventy".