26490957775685 has 8 divisors (see below), whose sum is σ = 34234468510200. Its totient is φ = 19562553434304.

The previous prime is 26490957775669. The next prime is 26490957775741. The reversal of 26490957775685 is 58657775909462.

It can be written as a sum of positive squares in 4 ways, for example, as 631525838596 + 25859431937089 = 794686^2 + 5085217^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26490957775685 - 2⁴ = 26490957775669 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203776598210 + ... + 203776598339.

It is an arithmetic number, because the mean of its divisors is an integer number (4279308563775).

Almost surely, 2^{26490957775685} is an apocalyptic number.

It is an amenable number.

26490957775685 is a deficient number, since it is larger than the sum of its proper divisors (7743510734515).

26490957775685 is a wasteful number, since it uses less digits than its factorization.

26490957775685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407553196567.

The product of its (nonzero) digits is 8001504000, while the sum is 80.

The spelling of 26490957775685 in words is "twenty-six trillion, four hundred ninety billion, nine hundred fifty-seven million, seven hundred seventy-five thousand, six hundred eighty-five".