775320920064 has 112 divisors (see below), whose sum is σ = 2297107613040. Its totient is φ = 258440232960.

The previous prime is 775320920041. The next prime is 775320920069. The reversal of 775320920064 is 460029023577.

It is a super-2 number, since 2×775320920064² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (775320920069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1531477 + ... + 1973844.

Almost surely, 2^775320920064 is an apocalyptic number.

It is an amenable number.

775320920064 is an abundant number, since it is smaller than the sum of its proper divisors (1521786692976).

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

775320920064 is an equidigital number, since it uses as much as digits as its factorization.

775320920064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3505356 (or 3505326 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 45.

The spelling of 775320920064 in words is "seven hundred seventy-five billion, three hundred twenty million, nine hundred twenty thousand, sixty-four".