26490549541 has 4 divisors (see below), whose sum is σ = 26497410912. Its totient is φ = 26483688172.

The previous prime is 26490549539. The next prime is 26490549551. The reversal of 26490549541 is 14594509462.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 26490549541 - 2¹ = 26490549539 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 (26490549551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3424891 + ... + 3432616.

It is an arithmetic number, because the mean of its divisors is an integer number (6624352728).

Almost surely, 2^26490549541 is an apocalyptic number.

It is an amenable number.

26490549541 is a deficient number, since it is larger than the sum of its proper divisors (6861371).

26490549541 is an equidigital number, since it uses as much as digits as its factorization.

26490549541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6861370.

The product of its (nonzero) digits is 1555200, while the sum is 49.

The spelling of 26490549541 in words is "twenty-six billion, four hundred ninety million, five hundred forty-nine thousand, five hundred forty-one".