26704397551 has 4 divisors (see below), whose sum is σ = 28758581992. Its totient is φ = 24650213112.

The previous prime is 26704397527. The next prime is 26704397561. The reversal of 26704397551 is 15579340762.

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

It is a cyclic number.

It is not a de Polignac number, because 26704397551 - 2⁵ = 26704397519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26704397495 and 26704397504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26704397561) 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, 1027092201 + ... + 1027092226.

It is an arithmetic number, because the mean of its divisors is an integer number (7189645498).

Almost surely, 2^26704397551 is an apocalyptic number.

26704397551 is a deficient number, since it is larger than the sum of its proper divisors (2054184441).

26704397551 is a wasteful number, since it uses less digits than its factorization.

26704397551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2054184440.

The product of its (nonzero) digits is 1587600, while the sum is 49.

The spelling of 26704397551 in words is "twenty-six billion, seven hundred four million, three hundred ninety-seven thousand, five hundred fifty-one".