200656521801 has 12 divisors (see below), whose sum is σ = 289923170628. Its totient is φ = 133731334944.

The previous prime is 200656521799. The next prime is 200656521809. The reversal of 200656521801 is 108125656002.

200656521801 is a `hidden beast` number, since 2 + 0 + 0 + 6 + 56 + 521 + 80 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 94432675401 + 106223846400 = 307299^2 + 325920^2 .

It is not a de Polignac number, because 200656521801 - 2¹ = 200656521799 is a prime.

It is not an unprimeable number, because it can be changed into a prime (200656521809) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3274590 + ... + 3335303.

It is an arithmetic number, because the mean of its divisors is an integer number (24160264219).

Almost surely, 2^200656521801 is an apocalyptic number.

It is an amenable number.

200656521801 is a deficient number, since it is larger than the sum of its proper divisors (89266648827).

200656521801 is a wasteful number, since it uses less digits than its factorization.

200656521801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6613272 (or 6613269 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The spelling of 200656521801 in words is "two hundred billion, six hundred fifty-six million, five hundred twenty-one thousand, eight hundred one".