77902394632 has 16 divisors (see below), whose sum is σ = 150778828800. Its totient is φ = 37694706960.

The previous prime is 77902394629. The next prime is 77902394639. The reversal of 77902394632 is 23649320977.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 77902394632.

It is not an unprimeable number, because it can be changed into a prime (77902394639) 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 3 ways as a sum of consecutive naturals, for example, 157061032 + ... + 157061527.

It is an arithmetic number, because the mean of its divisors is an integer number (9423676800).

Almost surely, 2^77902394632 is an apocalyptic number.

It is an amenable number.

77902394632 is a deficient number, since it is larger than the sum of its proper divisors (72876434168).

77902394632 is a wasteful number, since it uses less digits than its factorization.

77902394632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314122596 (or 314122592 counting only the distinct ones).

The product of its (nonzero) digits is 3429216, while the sum is 52.

The spelling of 77902394632 in words is "seventy-seven billion, nine hundred two million, three hundred ninety-four thousand, six hundred thirty-two".