77142424432 has 20 divisors (see below), whose sum is σ = 149485104216. Its totient is φ = 38565623360.

The previous prime is 77142424417. The next prime is 77142424451. The reversal of 77142424432 is 23442424177.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234283 + ... + 457354.

Almost surely, 2^77142424432 is an apocalyptic number.

It is an amenable number.

77142424432 is a deficient number, since it is larger than the sum of its proper divisors (72342679784).

77142424432 is a wasteful number, since it uses less digits than its factorization.

77142424432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698616 (or 698610 counting only the distinct ones).

The product of its digits is 301056, while the sum is 40.

The spelling of 77142424432 in words is "seventy-seven billion, one hundred forty-two million, four hundred twenty-four thousand, four hundred thirty-two".