77457473768 has 16 divisors (see below), whose sum is σ = 146590080480. Its totient is φ = 38366785648.

The previous prime is 77457473767. The next prime is 77457473771. The reversal of 77457473768 is 86737475477.

It is not an unprimeable number, because it can be changed into a prime (77457473767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45242996 + ... + 45244707.

It is an arithmetic number, because the mean of its divisors is an integer number (9161880030).

Almost surely, 2^77457473768 is an apocalyptic number.

It is an amenable number.

77457473768 is a deficient number, since it is larger than the sum of its proper divisors (69132606712).

77457473768 is a wasteful number, since it uses less digits than its factorization.

77457473768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90487816 (or 90487812 counting only the distinct ones).

The product of its digits is 193616640, while the sum is 65.

The spelling of 77457473768 in words is "seventy-seven billion, four hundred fifty-seven million, four hundred seventy-three thousand, seven hundred sixty-eight".