770138770772 has 12 divisors (see below), whose sum is σ = 1540277541600. Its totient is φ = 330059473176.

The previous prime is 770138770769. The next prime is 770138770787. The reversal of 770138770772 is 277077831077.

770138770772 is an admirable number.

It is a super-2 number, since 2×770138770772² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13752478022 + ... + 13752478077.

It is an arithmetic number, because the mean of its divisors is an integer number (128356461800).

Almost surely, 2^770138770772 is an apocalyptic number.

It is an amenable number.

770138770772 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

770138770772 is a wasteful number, since it uses less digits than its factorization.

770138770772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27504956110 (or 27504956108 counting only the distinct ones).

The product of its (nonzero) digits is 5647152, while the sum is 56.

The spelling of 770138770772 in words is "seven hundred seventy billion, one hundred thirty-eight million, seven hundred seventy thousand, seven hundred seventy-two".