77793551932 has 24 divisors (see below), whose sum is σ = 139064998464. Its totient is φ = 38061049152.

The previous prime is 77793551929. The next prime is 77793551933. The reversal of 77793551932 is 23915539777.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77793551933) 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 7 ways as a sum of consecutive naturals, for example, 890178 + ... + 973654.

It is an arithmetic number, because the mean of its divisors is an integer number (5794374936).

Almost surely, 2^77793551932 is an apocalyptic number.

It is an amenable number.

77793551932 is a deficient number, since it is larger than the sum of its proper divisors (61271446532).

77793551932 is a wasteful number, since it uses less digits than its factorization.

77793551932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88485 (or 88483 counting only the distinct ones).

The product of its digits is 12502350, while the sum is 58.

The spelling of 77793551932 in words is "seventy-seven billion, seven hundred ninety-three million, five hundred fifty-one thousand, nine hundred thirty-two".