26610127897 has 4 divisors (see below), whose sum is σ = 28175429556. Its totient is φ = 25044826240.

The previous prime is 26610127867. The next prime is 26610127949. The reversal of 26610127897 is 79872101662.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7509782281 + 19100345616 = 86659^2 + 138204^2 .

It is a cyclic number.

It is not a de Polignac number, because 26610127897 - 2⁷ = 26610127769 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26610127897.

It is not an unprimeable number, because it can be changed into a prime (26610127807) 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, 782650804 + ... + 782650837.

It is an arithmetic number, because the mean of its divisors is an integer number (7043857389).

Almost surely, 2^26610127897 is an apocalyptic number.

It is an amenable number.

26610127897 is a deficient number, since it is larger than the sum of its proper divisors (1565301659).

26610127897 is a wasteful number, since it uses less digits than its factorization.

26610127897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1565301658.

The product of its (nonzero) digits is 508032, while the sum is 49.

The spelling of 26610127897 in words is "twenty-six billion, six hundred ten million, one hundred twenty-seven thousand, eight hundred ninety-seven".