77421577463 has 16 divisors (see below), whose sum is σ = 83178627840. Its totient is φ = 71799369600.

The previous prime is 77421577459. The next prime is 77421577537. The reversal of 77421577463 is 36477512477.

It is a cyclic number.

It is not a de Polignac number, because 77421577463 - 2² = 77421577459 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77421577403) 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, 2168168 + ... + 2203586.

It is an arithmetic number, because the mean of its divisors is an integer number (5198664240).

Almost surely, 2^77421577463 is an apocalyptic number.

77421577463 is a deficient number, since it is larger than the sum of its proper divisors (5757050377).

77421577463 is a wasteful number, since it uses less digits than its factorization.

77421577463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37318.

The product of its digits is 6914880, while the sum is 53.

The spelling of 77421577463 in words is "seventy-seven billion, four hundred twenty-one million, five hundred seventy-seven thousand, four hundred sixty-three".