8240785408770 has 128 divisors (see below), whose sum is σ = 21105620444160. Its totient is φ = 2053288869120.

The previous prime is 8240785408763. The next prime is 8240785408781. The reversal of 8240785408770 is 778045870428.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 27622600 + ... + 27919340.

It is an arithmetic number, because the mean of its divisors is an integer number (164887659720).

Almost surely, 2^{8240785408770} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8240785408770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10552810222080).

8240785408770 is an abundant number, since it is smaller than the sum of its proper divisors (12864835035390).

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

8240785408770 is a wasteful number, since it uses less digits than its factorization.

8240785408770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297440.

The product of its (nonzero) digits is 28098560, while the sum is 60.

The spelling of 8240785408770 in words is "eight trillion, two hundred forty billion, seven hundred eighty-five million, four hundred eight thousand, seven hundred seventy".