77908830530 has 32 divisors (see below), whose sum is σ = 140695654320. Its totient is φ = 31061479680.

The previous prime is 77908830491. The next prime is 77908830541. The reversal of 77908830530 is 3503880977.

It can be written as a sum of positive squares in 8 ways, for example, as 26220353329 + 51688477201 = 161927^2 + 227351^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6206060 + ... + 6218600.

Almost surely, 2^77908830530 is an apocalyptic number.

77908830530 is a deficient number, since it is larger than the sum of its proper divisors (62786823790).

77908830530 is a wasteful number, since it uses less digits than its factorization.

77908830530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14534.

The product of its (nonzero) digits is 1270080, while the sum is 50.

The spelling of 77908830530 in words is "seventy-seven billion, nine hundred eight million, eight hundred thirty thousand, five hundred thirty".