26815451651 has 2 divisors, whose sum is σ = 26815451652. Its totient is φ = 26815451650.

The previous prime is 26815451591. The next prime is 26815451657. The reversal of 26815451651 is 15615451862.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26815451651 - 2¹⁴ = 26815435267 is a prime.

It is not a weakly prime, because it can be changed into another prime (26815451657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13407725825 + 13407725826.

It is an arithmetic number, because the mean of its divisors is an integer number (13407725826).

Almost surely, 2^26815451651 is an apocalyptic number.

26815451651 is a deficient number, since it is larger than the sum of its proper divisors (1).

26815451651 is an equidigital number, since it uses as much as digits as its factorization.

26815451651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288000, while the sum is 44.

The spelling of 26815451651 in words is "twenty-six billion, eight hundred fifteen million, four hundred fifty-one thousand, six hundred fifty-one".