780826437940080 has 80 divisors (see below), whose sum is σ = 2766356522993664. Its totient is φ = 178474614385920.

The previous prime is 780826437940061. The next prime is 780826437940091. The reversal of 780826437940080 is 80049734628087.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 780826437939993 and 780826437940020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 232388819136 + ... + 232388822495.

Almost surely, 2^{780826437940080} is an apocalyptic number.

780826437940080 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

780826437940080 is an abundant number, since it is smaller than the sum of its proper divisors (1985530085053584).

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

780826437940080 is a wasteful number, since it uses less digits than its factorization.

780826437940080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464777641654 (or 464777641648 counting only the distinct ones).

The product of its (nonzero) digits is 130056192, while the sum is 66.

The spelling of 780826437940080 in words is "seven hundred eighty trillion, eight hundred twenty-six billion, four hundred thirty-seven million, nine hundred forty thousand, eighty".