2451402081217 has 2 divisors, whose sum is σ = 2451402081218. Its totient is φ = 2451402081216.

The previous prime is 2451402081199. The next prime is 2451402081241. The reversal of 2451402081217 is 7121802041542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2312236524816 + 139165556401 = 1520604^2 + 373049^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2451402081217 is a prime.

It is not a weakly prime, because it can be changed into another prime (2451402081257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1225701040608 + 1225701040609.

It is an arithmetic number, because the mean of its divisors is an integer number (1225701040609).

Almost surely, 2^{2451402081217} is an apocalyptic number.

It is an amenable number.

2451402081217 is a deficient number, since it is larger than the sum of its proper divisors (1).

2451402081217 is an equidigital number, since it uses as much as digits as its factorization.

2451402081217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35840, while the sum is 37.

The spelling of 2451402081217 in words is "two trillion, four hundred fifty-one billion, four hundred two million, eighty-one thousand, two hundred seventeen".