77797775730 has 32 divisors (see below), whose sum is σ = 187010610048. Its totient is φ = 20713190400.

The previous prime is 77797775711. The next prime is 77797775821. The reversal of 77797775730 is 3757779777.

It is an unprimeable number.

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, 2035951 + ... + 2073810.

It is an arithmetic number, because the mean of its divisors is an integer number (5844081564).

Almost surely, 2^77797775730 is an apocalyptic number.

77797775730 is an abundant number, since it is smaller than the sum of its proper divisors (109212834318).

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

77797775730 is a wasteful number, since it uses less digits than its factorization.

77797775730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4110402.

The product of its (nonzero) digits is 111178305, while the sum is 66.

The spelling of 77797775730 in words is "seventy-seven billion, seven hundred ninety-seven million, seven hundred seventy-five thousand, seven hundred thirty".