202053007661917 has 2 divisors, whose sum is σ = 202053007661918. Its totient is φ = 202053007661916.

The previous prime is 202053007661903. The next prime is 202053007662019. The reversal of 202053007661917 is 719166700350202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 166015726014681 + 36037281647236 = 12884709^2 + 6003106^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202053007661917 is a prime.

It is a super-2 number, since 2×202053007661917² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202053007662917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101026503830958 + 101026503830959.

It is an arithmetic number, because the mean of its divisors is an integer number (101026503830959).

Almost surely, 2^{202053007661917} is an apocalyptic number.

It is an amenable number.

202053007661917 is a deficient number, since it is larger than the sum of its proper divisors (1).

202053007661917 is an equidigital number, since it uses as much as digits as its factorization.

202053007661917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 952560, while the sum is 49.

The spelling of 202053007661917 in words is "two hundred two trillion, fifty-three billion, seven million, six hundred sixty-one thousand, nine hundred seventeen".