779070853855 has 16 divisors (see below), whose sum is σ = 1077895255104. Its totient is φ = 529492400640.

The previous prime is 779070853853. The next prime is 779070853867. The reversal of 779070853855 is 558358070977.

It is a happy number.

It is not a de Polignac number, because 779070853855 - 2¹ = 779070853853 is a prime.

It is a super-2 number, since 2×779070853855² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (779070853853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98487936 + ... + 98495845.

It is an arithmetic number, because the mean of its divisors is an integer number (67368453444).

Almost surely, 2^779070853855 is an apocalyptic number.

779070853855 is a deficient number, since it is larger than the sum of its proper divisors (298824401249).

779070853855 is a wasteful number, since it uses less digits than its factorization.

779070853855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196983906.

The product of its (nonzero) digits is 74088000, while the sum is 64.

The spelling of 779070853855 in words is "seven hundred seventy-nine billion, seventy million, eight hundred fifty-three thousand, eight hundred fifty-five".