77803866030 has 128 divisors (see below), whose sum is σ = 215959965696. Its totient is φ = 17759692800.

The previous prime is 77803866013. The next prime is 77803866031. The reversal of 77803866030 is 3066830877.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77803866031) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 275734 + ... + 481286.

It is an arithmetic number, because the mean of its divisors is an integer number (1687187232).

Almost surely, 2^77803866030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77803866030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107979982848).

77803866030 is an abundant number, since it is smaller than the sum of its proper divisors (138156099666).

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

77803866030 is a wasteful number, since it uses less digits than its factorization.

77803866030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205642.

The product of its (nonzero) digits is 1016064, while the sum is 48.

The spelling of 77803866030 in words is "seventy-seven billion, eight hundred three million, eight hundred sixty-six thousand, thirty".