26490632547 has 4 divisors (see below), whose sum is σ = 35320843400. Its totient is φ = 17660421696.

The previous prime is 26490632537. The next prime is 26490632557. The reversal of 26490632547 is 74523609462.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (26490632537) and next prime (26490632557).

It is not a de Polignac number, because 26490632547 - 2¹⁰ = 26490631523 is a prime.

It is a super-2 number, since 2×26490632547² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26490632496 and 26490632505.

It is not an unprimeable number, because it can be changed into a prime (26490632527) 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, 4415105422 + ... + 4415105427.

It is an arithmetic number, because the mean of its divisors is an integer number (8830210850).

Almost surely, 2^26490632547 is an apocalyptic number.

26490632547 is a deficient number, since it is larger than the sum of its proper divisors (8830210853).

26490632547 is an equidigital number, since it uses as much as digits as its factorization.

26490632547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8830210852.

The product of its (nonzero) digits is 2177280, while the sum is 48.

The spelling of 26490632547 in words is "twenty-six billion, four hundred ninety million, six hundred thirty-two thousand, five hundred forty-seven".