26170425487 has 4 divisors (see below), whose sum is σ = 26173640416. Its totient is φ = 26167210560.

The previous prime is 26170425469. The next prime is 26170425499. The reversal of 26170425487 is 78452407162.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78452407162 = 2 ⋅39226203581.

It is a cyclic number.

It is not a de Polignac number, because 26170425487 - 2¹⁵ = 26170392719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26170426487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1595223 + ... + 1611544.

It is an arithmetic number, because the mean of its divisors is an integer number (6543410104).

Almost surely, 2^26170425487 is an apocalyptic number.

26170425487 is a deficient number, since it is larger than the sum of its proper divisors (3214929).

26170425487 is an equidigital number, since it uses as much as digits as its factorization.

26170425487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3214928.

The product of its (nonzero) digits is 752640, while the sum is 46.

The spelling of 26170425487 in words is "twenty-six billion, one hundred seventy million, four hundred twenty-five thousand, four hundred eighty-seven".