651454454117 has 2 divisors, whose sum is σ = 651454454118. Its totient is φ = 651454454116.

The previous prime is 651454454087. The next prime is 651454454173. The reversal of 651454454117 is 711454454156.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 434292862081 + 217161592036 = 659009^2 + 466006^2 .

It is a cyclic number.

It is not a de Polignac number, because 651454454117 - 2¹² = 651454450021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (651454454617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325727227058 + 325727227059.

It is an arithmetic number, because the mean of its divisors is an integer number (325727227059).

Almost surely, 2^651454454117 is an apocalyptic number.

It is an amenable number.

651454454117 is a deficient number, since it is larger than the sum of its proper divisors (1).

651454454117 is an equidigital number, since it uses as much as digits as its factorization.

651454454117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1344000, while the sum is 47.

The spelling of 651454454117 in words is "six hundred fifty-one billion, four hundred fifty-four million, four hundred fifty-four thousand, one hundred seventeen".