77400423832 has 8 divisors (see below), whose sum is σ = 145125794700. Its totient is φ = 38700211912.

The previous prime is 77400423797. The next prime is 77400423889. The reversal of 77400423832 is 23832400477.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4837526482 + ... + 4837526497.

Almost surely, 2^77400423832 is an apocalyptic number.

It is an amenable number.

77400423832 is a deficient number, since it is larger than the sum of its proper divisors (67725370868).

77400423832 is a wasteful number, since it uses less digits than its factorization.

77400423832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9675052985 (or 9675052981 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 40.

The spelling of 77400423832 in words is "seventy-seven billion, four hundred million, four hundred twenty-three thousand, eight hundred thirty-two".