7780814455356 has 72 divisors (see below), whose sum is σ = 19807973640000. Its totient is φ = 2575182879360.

The previous prime is 7780814455291. The next prime is 7780814455429. The reversal of 7780814455356 is 6535544180877.

It is a happy number.

7780814455356 is a `hidden beast` number, since 7 + 7 + 80 + 8 + 14 + 4 + 5 + 535 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 7780814455293 and 7780814455302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13388301 + ... + 13957371.

It is an arithmetic number, because the mean of its divisors is an integer number (275110745000).

Almost surely, 2^{7780814455356} is an apocalyptic number.

It is an amenable number.

7780814455356 is an abundant number, since it is smaller than the sum of its proper divisors (12027159184644).

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

7780814455356 is a wasteful number, since it uses less digits than its factorization.

7780814455356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571779 (or 571774 counting only the distinct ones).

The product of its (nonzero) digits is 112896000, while the sum is 63.

The spelling of 7780814455356 in words is "seven trillion, seven hundred eighty billion, eight hundred fourteen million, four hundred fifty-five thousand, three hundred fifty-six".