77830606530 has 48 divisors (see below), whose sum is σ = 206177694840. Its totient is φ = 20363226624.

The previous prime is 77830606517. The next prime is 77830606543. The reversal of 77830606530 is 3560603877.

77830606530 is a `hidden beast` number, since 7 + 7 + 8 + 3 + 0 + 606 + 5 + 30 = 666.

It is an interprime number because it is at equal distance from previous prime (77830606517) and next prime (77830606543).

It can be written as a sum of positive squares in 4 ways, for example, as 53717796441 + 24112810089 = 231771^2 + 155283^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8153575 + ... + 8163114.

Almost surely, 2^77830606530 is an apocalyptic number.

77830606530 is an abundant number, since it is smaller than the sum of its proper divisors (128347088310).

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

77830606530 is a wasteful number, since it uses less digits than its factorization.

77830606530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16316755 (or 16316752 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 45.

The spelling of 77830606530 in words is "seventy-seven billion, eight hundred thirty million, six hundred six thousand, five hundred thirty".