780400916712 has 64 divisors (see below), whose sum is σ = 2167944609600. Its totient is φ = 260113924800.

The previous prime is 780400916663. The next prime is 780400916717. The reversal of 780400916712 is 217619004087.

It is a happy number.

780400916712 is a `hidden beast` number, since 7 + 80 + 400 + 9 + 167 + 1 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (780400916717) 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, 2872663 + ... + 3132569.

It is an arithmetic number, because the mean of its divisors is an integer number (33874134525).

Almost surely, 2^780400916712 is an apocalyptic number.

780400916712 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

780400916712 is an abundant number, since it is smaller than the sum of its proper divisors (1387543692888).

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

780400916712 is a wasteful number, since it uses less digits than its factorization.

780400916712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273823 (or 273813 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The spelling of 780400916712 in words is "seven hundred eighty billion, four hundred million, nine hundred sixteen thousand, seven hundred twelve".