8071782985400 has 48 divisors (see below), whose sum is σ = 18767126717640. Its totient is φ = 3228673404800.

The previous prime is 8071782985339. The next prime is 8071782985477. The reversal of 8071782985400 is 45892871708.

It is a super-2 number, since 2×8071782985400² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8071782985400.

It is a congruent number.

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, 20223770 + ... + 20619030.

Almost surely, 2^{8071782985400} is an apocalyptic number.

It is an amenable number.

8071782985400 is an abundant number, since it is smaller than the sum of its proper divisors (10695343732240).

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

8071782985400 is a wasteful number, since it uses less digits than its factorization.

8071782985400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497384 (or 497375 counting only the distinct ones).

The product of its (nonzero) digits is 9031680, while the sum is 59.

The spelling of 8071782985400 in words is "eight trillion, seventy-one billion, seven hundred eighty-two million, nine hundred eighty-five thousand, four hundred".