26455697481 has 4 divisors (see below), whose sum is σ = 35274263312. Its totient is φ = 17637131652.

The previous prime is 26455697473. The next prime is 26455697509. The reversal of 26455697481 is 18479655462.

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 not a de Polignac number, because 26455697481 - 2³ = 26455697473 is a prime.

It is a super-2 number, since 2×26455697481² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26455697461) 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, 4409282911 + ... + 4409282916.

It is an arithmetic number, because the mean of its divisors is an integer number (8818565828).

Almost surely, 2^26455697481 is an apocalyptic number.

It is an amenable number.

26455697481 is a deficient number, since it is larger than the sum of its proper divisors (8818565831).

26455697481 is an equidigital number, since it uses as much as digits as its factorization.

26455697481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8818565830.

The product of its digits is 14515200, while the sum is 57.

The spelling of 26455697481 in words is "twenty-six billion, four hundred fifty-five million, six hundred ninety-seven thousand, four hundred eighty-one".