20591401354297 has 2 divisors, whose sum is σ = 20591401354298. Its totient is φ = 20591401354296.

The previous prime is 20591401354283. The next prime is 20591401354331. The reversal of 20591401354297 is 79245310419502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15540396821161 + 5051004533136 = 3942131^2 + 2247444^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20591401354297 is a prime.

It is not a weakly prime, because it can be changed into another prime (20591491354297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10295700677148 + 10295700677149.

It is an arithmetic number, because the mean of its divisors is an integer number (10295700677149).

Almost surely, 2^{20591401354297} is an apocalyptic number.

It is an amenable number.

20591401354297 is a deficient number, since it is larger than the sum of its proper divisors (1).

20591401354297 is an equidigital number, since it uses as much as digits as its factorization.

20591401354297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2721600, while the sum is 52.

The spelling of 20591401354297 in words is "twenty trillion, five hundred ninety-one billion, four hundred one million, three hundred fifty-four thousand, two hundred ninety-seven".