77725764633 has 64 divisors (see below), whose sum is σ = 120402339840. Its totient is φ = 44132774400.

The previous prime is 77725764497. The next prime is 77725764673. The reversal of 77725764633 is 33646752777.

It is a happy number.

It is not a de Polignac number, because 77725764633 - 2¹⁶ = 77725699097 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (77725764673) 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 63 ways as a sum of consecutive naturals, for example, 30611478 + ... + 30614016.

It is an arithmetic number, because the mean of its divisors is an integer number (1881286560).

Almost surely, 2^77725764633 is an apocalyptic number.

It is an amenable number.

77725764633 is a deficient number, since it is larger than the sum of its proper divisors (42676575207).

77725764633 is a wasteful number, since it uses less digits than its factorization.

77725764633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3390.

The product of its digits is 31116960, while the sum is 57.

The spelling of 77725764633 in words is "seventy-seven billion, seven hundred twenty-five million, seven hundred sixty-four thousand, six hundred thirty-three".