200621354503968 has 120 divisors (see below), whose sum is σ = 590559689497932. Its totient is φ = 66812823281664.

The previous prime is 200621354503909. The next prime is 200621354503987. The reversal of 200621354503968 is 869305453126002.

It is a happy number.

200621354503968 is a `hidden beast` number, since 2 + 0 + 0 + 6 + 2 + 1 + 3 + 545 + 0 + 3 + 96 + 8 = 666.

200621354503968 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 185886719504784 + 14734634999184 = 13634028^2 + 3838572^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 32434705 + ... + 38121552.

Almost surely, 2^{200621354503968} is an apocalyptic number.

It is an amenable number.

200621354503968 is an abundant number, since it is smaller than the sum of its proper divisors (389938334993964).

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

200621354503968 is a wasteful number, since it uses less digits than its factorization.

200621354503968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70557376 (or 70557359 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 54.

The spelling of 200621354503968 in words is "two hundred trillion, six hundred twenty-one billion, three hundred fifty-four million, five hundred three thousand, nine hundred sixty-eight".