778023538256460 has 24 divisors (see below), whose sum is σ = 2178465907118256. Its totient is φ = 207472943535040.

The previous prime is 778023538256449. The next prime is 778023538256479. The reversal of 778023538256460 is 64652835320877.

It is a super-2 number, since 2×778023538256460² (a number of 31 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 778023538256391 and 778023538256400.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6483529485411 + ... + 6483529485530.

It is an arithmetic number, because the mean of its divisors is an integer number (90769412796594).

Almost surely, 2^{778023538256460} is an apocalyptic number.

It is an amenable number.

778023538256460 is an abundant number, since it is smaller than the sum of its proper divisors (1400442368861796).

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

778023538256460 is a wasteful number, since it uses less digits than its factorization.

778023538256460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12967058970953 (or 12967058970951 counting only the distinct ones).

The product of its (nonzero) digits is 406425600, while the sum is 66.

The spelling of 778023538256460 in words is "seven hundred seventy-eight trillion, twenty-three billion, five hundred thirty-eight million, two hundred fifty-six thousand, four hundred sixty".