770106664638 has 12 divisors (see below), whose sum is σ = 1668564440088. Its totient is φ = 256702221540.

The previous prime is 770106664637. The next prime is 770106664669. The reversal of 770106664638 is 836466601077.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (770106664637) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21391851778 + ... + 21391851813.

It is an arithmetic number, because the mean of its divisors is an integer number (139047036674).

Almost surely, 2^770106664638 is an apocalyptic number.

770106664638 is an abundant number, since it is smaller than the sum of its proper divisors (898457775450).

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

770106664638 is a wasteful number, since it uses less digits than its factorization.

770106664638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42783703599 (or 42783703596 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 54.

The spelling of 770106664638 in words is "seven hundred seventy billion, one hundred six million, six hundred sixty-four thousand, six hundred thirty-eight".