77783536506 has 32 divisors (see below), whose sum is σ = 173310802560. Its totient is φ = 23108105664.

The previous prime is 77783536489. The next prime is 77783536511. The reversal of 77783536506 is 60563538777.

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, 17191270 + ... + 17195793.

It is an arithmetic number, because the mean of its divisors is an integer number (5415962580).

Almost surely, 2^77783536506 is an apocalyptic number.

77783536506 is an abundant number, since it is smaller than the sum of its proper divisors (95527266054).

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

77783536506 is a wasteful number, since it uses less digits than its factorization.

77783536506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34387110.

The product of its (nonzero) digits is 22226400, while the sum is 57.

The spelling of 77783536506 in words is "seventy-seven billion, seven hundred eighty-three million, five hundred thirty-six thousand, five hundred six".