26251886166487 has 2 divisors, whose sum is σ = 26251886166488. Its totient is φ = 26251886166486.

The previous prime is 26251886166419. The next prime is 26251886166607. The reversal of 26251886166487 is 78466168815262.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26251886166487 - 2³⁹ = 25702130352599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26251886116487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13125943083243 + 13125943083244.

It is an arithmetic number, because the mean of its divisors is an integer number (13125943083244).

Almost surely, 2^{26251886166487} is an apocalyptic number.

26251886166487 is a deficient number, since it is larger than the sum of its proper divisors (1).

26251886166487 is an equidigital number, since it uses as much as digits as its factorization.

26251886166487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 371589120, while the sum is 70.

The spelling of 26251886166487 in words is "twenty-six trillion, two hundred fifty-one billion, eight hundred eighty-six million, one hundred sixty-six thousand, four hundred eighty-seven".