6459869157121 has 2 divisors, whose sum is σ = 6459869157122. Its totient is φ = 6459869157120.

The previous prime is 6459869157109. The next prime is 6459869157173. The reversal of 6459869157121 is 1217519689546.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5900701706496 + 559167450625 = 2429136^2 + 747775^2 .

It is a cyclic number.

It is not a de Polignac number, because 6459869157121 - 2²¹ = 6459867059969 is a prime.

It is not a weakly prime, because it can be changed into another prime (6459869158121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3229934578560 + 3229934578561.

It is an arithmetic number, because the mean of its divisors is an integer number (3229934578561).

Almost surely, 2^{6459869157121} is an apocalyptic number.

It is an amenable number.

6459869157121 is a deficient number, since it is larger than the sum of its proper divisors (1).

6459869157121 is an equidigital number, since it uses as much as digits as its factorization.

6459869157121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32659200, while the sum is 64.

The spelling of 6459869157121 in words is "six trillion, four hundred fifty-nine billion, eight hundred sixty-nine million, one hundred fifty-seven thousand, one hundred twenty-one".