26990760551 has 2 divisors, whose sum is σ = 26990760552. Its totient is φ = 26990760550.

The previous prime is 26990760541. The next prime is 26990760571. The reversal of 26990760551 is 15506709962.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26990760551 - 2²⁶ = 26923651687 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26990760551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26990760541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13495380275 + 13495380276.

It is an arithmetic number, because the mean of its divisors is an integer number (13495380276).

Almost surely, 2^26990760551 is an apocalyptic number.

26990760551 is a deficient number, since it is larger than the sum of its proper divisors (1).

26990760551 is an equidigital number, since it uses as much as digits as its factorization.

26990760551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1020600, while the sum is 50.

The spelling of 26990760551 in words is "twenty-six billion, nine hundred ninety million, seven hundred sixty thousand, five hundred fifty-one".