77641382328 has 16 divisors (see below), whose sum is σ = 194103455880. Its totient is φ = 25880460768.

The previous prime is 77641382321. The next prime is 77641382333. The reversal of 77641382328 is 82328314677.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77641382321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1617528775 + ... + 1617528822.

Almost surely, 2^77641382328 is an apocalyptic number.

It is an amenable number.

77641382328 is an abundant number, since it is smaller than the sum of its proper divisors (116462073552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77641382328 is a wasteful number, since it uses less digits than its factorization.

77641382328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3235057606 (or 3235057602 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 51.

The spelling of 77641382328 in words is "seventy-seven billion, six hundred forty-one million, three hundred eighty-two thousand, three hundred twenty-eight".