26762505139421 has 4 divisors (see below), whose sum is σ = 26762550889500. Its totient is φ = 26762459389344.

The previous prime is 26762505139411. The next prime is 26762505139423. The reversal of 26762505139421 is 12493150526762.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 20753363803396 + 6009141336025 = 4555586^2 + 2451355^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26762505139421 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 (26762505139423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21986066 + ... + 23171363.

It is an arithmetic number, because the mean of its divisors is an integer number (6690637722375).

Almost surely, 2^{26762505139421} is an apocalyptic number.

It is an amenable number.

26762505139421 is a deficient number, since it is larger than the sum of its proper divisors (45750079).

26762505139421 is an equidigital number, since it uses as much as digits as its factorization.

26762505139421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45750078.

The product of its (nonzero) digits is 5443200, while the sum is 53.

The spelling of 26762505139421 in words is "twenty-six trillion, seven hundred sixty-two billion, five hundred five million, one hundred thirty-nine thousand, four hundred twenty-one".