77476427760 has 80 divisors (see below), whose sum is σ = 240364213920. Its totient is φ = 20644270080.

The previous prime is 77476427747. The next prime is 77476427761. The reversal of 77476427760 is 6772467477.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 77476427760.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77476427761) by changing a digit.

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, 184140 + ... + 434580.

It is an arithmetic number, because the mean of its divisors is an integer number (3004552674).

Almost surely, 2^77476427760 is an apocalyptic number.

It is an amenable number.

77476427760 is an abundant number, since it is smaller than the sum of its proper divisors (162887786160).

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

77476427760 is a wasteful number, since it uses less digits than its factorization.

77476427760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251746 (or 251740 counting only the distinct ones).

The product of its (nonzero) digits is 19361664, while the sum is 57.

The spelling of 77476427760 in words is "seventy-seven billion, four hundred seventy-six million, four hundred twenty-seven thousand, seven hundred sixty".