2564869192531 has 2 divisors, whose sum is σ = 2564869192532. Its totient is φ = 2564869192530.

The previous prime is 2564869192517. The next prime is 2564869192541. The reversal of 2564869192531 is 1352919684652.

It is a happy number.

2564869192531 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2564869192531 - 2⁵ = 2564869192499 is a prime.

It is a super-2 number, since 2×2564869192531² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2564869192531.

It is not a weakly prime, because it can be changed into another prime (2564869192541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282434596265 + 1282434596266.

It is an arithmetic number, because the mean of its divisors is an integer number (1282434596266).

Almost surely, 2^{2564869192531} is an apocalyptic number.

2564869192531 is a deficient number, since it is larger than the sum of its proper divisors (1).

2564869192531 is an equidigital number, since it uses as much as digits as its factorization.

2564869192531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27993600, while the sum is 61.

The spelling of 2564869192531 in words is "two trillion, five hundred sixty-four billion, eight hundred sixty-nine million, one hundred ninety-two thousand, five hundred thirty-one".