26307990794 has 4 divisors (see below), whose sum is σ = 39461986194. Its totient is φ = 13153995396.

The previous prime is 26307990781. The next prime is 26307990799. The reversal of 26307990794 is 49709970362.

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

It can be written as a sum of positive squares in only one way, i.e., 25197435169 + 1110555625 = 158737^2 + 33325^2 .

It is a super-2 number, since 2×26307990794² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (26307990799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6576997697 + ... + 6576997700.

Almost surely, 2^26307990794 is an apocalyptic number.

26307990794 is a deficient number, since it is larger than the sum of its proper divisors (13153995400).

26307990794 is a wasteful number, since it uses less digits than its factorization.

26307990794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13153995399.

The product of its (nonzero) digits is 5143824, while the sum is 56.

It can be divided in two parts, 26307 and 990794, that added together give a palindrome (1017101).

The spelling of 26307990794 in words is "twenty-six billion, three hundred seven million, nine hundred ninety thousand, seven hundred ninety-four".