8253521645780 has 12 divisors (see below), whose sum is σ = 17332395456180. Its totient is φ = 3301408658304.

The previous prime is 8253521645773. The next prime is 8253521645819. The reversal of 8253521645780 is 875461253528.

It can be written as a sum of positive squares in 2 ways, for example, as 2565878570896 + 5687643074884 = 1601836^2 + 2384878^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206338041125 + ... + 206338041164.

It is an arithmetic number, because the mean of its divisors is an integer number (1444366288015).

Almost surely, 2^{8253521645780} is an apocalyptic number.

It is an amenable number.

8253521645780 is an abundant number, since it is smaller than the sum of its proper divisors (9078873810400).

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

8253521645780 is a wasteful number, since it uses less digits than its factorization.

8253521645780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412676082298 (or 412676082296 counting only the distinct ones).

The product of its (nonzero) digits is 16128000, while the sum is 56.

The spelling of 8253521645780 in words is "eight trillion, two hundred fifty-three billion, five hundred twenty-one million, six hundred forty-five thousand, seven hundred eighty".