772877043630 has 128 divisors (see below), whose sum is σ = 2087445427200. Its totient is φ = 203460388992.

The previous prime is 772877043623. The next prime is 772877043661. The reversal of 772877043630 is 36340778277.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 30621856 + ... + 30647084.

It is an arithmetic number, because the mean of its divisors is an integer number (16308167400).

Almost surely, 2^772877043630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 772877043630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1043722713600).

772877043630 is an abundant number, since it is smaller than the sum of its proper divisors (1314568383570).

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

772877043630 is a wasteful number, since it uses less digits than its factorization.

772877043630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26695 (or 26689 counting only the distinct ones).

The product of its (nonzero) digits is 8297856, while the sum is 54.

The spelling of 772877043630 in words is "seven hundred seventy-two billion, eight hundred seventy-seven million, forty-three thousand, six hundred thirty".