897465940161001 has 2 divisors, whose sum is σ = 897465940161002. Its totient is φ = 897465940161000.

The previous prime is 897465940160981. The next prime is 897465940161029. The reversal of 897465940161001 is 100161049564798.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 538317769208976 + 359148170952025 = 23201676^2 + 18951205^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-897465940161001 is a prime.

It is a super-2 number, since 2×897465940161001² (a number of 31 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (897465940161071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 448732970080500 + 448732970080501.

It is an arithmetic number, because the mean of its divisors is an integer number (448732970080501).

Almost surely, 2^{897465940161001} is an apocalyptic number.

It is an amenable number.

897465940161001 is a deficient number, since it is larger than the sum of its proper divisors (1).

897465940161001 is an equidigital number, since it uses as much as digits as its factorization.

897465940161001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13063680, while the sum is 61.

The spelling of 897465940161001 in words is "eight hundred ninety-seven trillion, four hundred sixty-five billion, nine hundred forty million, one hundred sixty-one thousand, one".