2551091854097 has 2 divisors, whose sum is σ = 2551091854098. Its totient is φ = 2551091854096.

The previous prime is 2551091854079. The next prime is 2551091854117. The reversal of 2551091854097 is 7904581901552.

Together with previous prime (2551091854079) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1294807306816 + 1256284547281 = 1137896^2 + 1120841^2 .

It is a cyclic number.

It is not a de Polignac number, because 2551091854097 - 2²⁴ = 2551075076881 is a prime.

It is not a weakly prime, because it can be changed into another prime (2551091824097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1275545927048 + 1275545927049.

It is an arithmetic number, because the mean of its divisors is an integer number (1275545927049).

Almost surely, 2^{2551091854097} is an apocalyptic number.

It is an amenable number.

2551091854097 is a deficient number, since it is larger than the sum of its proper divisors (1).

2551091854097 is an equidigital number, since it uses as much as digits as its factorization.

2551091854097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536000, while the sum is 56.

The spelling of 2551091854097 in words is "two trillion, five hundred fifty-one billion, ninety-one million, eight hundred fifty-four thousand, ninety-seven".