80781382650 has 24 divisors (see below), whose sum is σ = 200337829344. Its totient is φ = 21541702000.

The previous prime is 80781382639. The next prime is 80781382711. The reversal of 80781382650 is 5628318708.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 80781382650.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 269271126 + ... + 269271425.

It is an arithmetic number, because the mean of its divisors is an integer number (8347409556).

Almost surely, 2^80781382650 is an apocalyptic number.

80781382650 is an abundant number, since it is smaller than the sum of its proper divisors (119556446694).

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

80781382650 is a wasteful number, since it uses less digits than its factorization.

80781382650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538542566 (or 538542561 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 48.

The spelling of 80781382650 in words is "eighty billion, seven hundred eighty-one million, three hundred eighty-two thousand, six hundred fifty".