26356215451 has 4 divisors (see below), whose sum is σ = 26362133352. Its totient is φ = 26350297552.

The previous prime is 26356215419. The next prime is 26356215481. The reversal of 26356215451 is 15451265362.

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 26356215451 - 2⁵ = 26356215419 is a prime.

It is a super-2 number, since 2×26356215451² (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 (26356215481) 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, 2952265 + ... + 2961178.

It is an arithmetic number, because the mean of its divisors is an integer number (6590533338).

Almost surely, 2^26356215451 is an apocalyptic number.

26356215451 is a deficient number, since it is larger than the sum of its proper divisors (5917901).

26356215451 is an equidigital number, since it uses as much as digits as its factorization.

26356215451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5917900.

The product of its digits is 216000, while the sum is 40.

The spelling of 26356215451 in words is "twenty-six billion, three hundred fifty-six million, two hundred fifteen thousand, four hundred fifty-one".