780138211560 has 128 divisors (see below), whose sum is σ = 2499219532800. Its totient is φ = 194383687680.

The previous prime is 780138211481. The next prime is 780138211583. The reversal of 780138211560 is 65112831087.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3507889 + ... + 3723648.

It is an arithmetic number, because the mean of its divisors is an integer number (19525152600).

Almost surely, 2^780138211560 is an apocalyptic number.

It is an amenable number.

780138211560 is an abundant number, since it is smaller than the sum of its proper divisors (1719081321240).

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

780138211560 is a wasteful number, since it uses less digits than its factorization.

780138211560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7231611 (or 7231607 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 42.

The spelling of 780138211560 in words is "seven hundred eighty billion, one hundred thirty-eight million, two hundred eleven thousand, five hundred sixty".