26911557007 has 2 divisors, whose sum is σ = 26911557008. Its totient is φ = 26911557006.

The previous prime is 26911556983. The next prime is 26911557011. The reversal of 26911557007 is 70075511962.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26911557007 - 2¹⁵ = 26911524239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26911557017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13455778503 + 13455778504.

It is an arithmetic number, because the mean of its divisors is an integer number (13455778504).

Almost surely, 2^26911557007 is an apocalyptic number.

26911557007 is a deficient number, since it is larger than the sum of its proper divisors (1).

26911557007 is an equidigital number, since it uses as much as digits as its factorization.

26911557007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 132300, while the sum is 43.

The spelling of 26911557007 in words is "twenty-six billion, nine hundred eleven million, five hundred fifty-seven thousand, seven".