26740966399 has 24 divisors (see below), whose sum is σ = 32258250752. Its totient is φ = 21711103920.

The previous prime is 26740966397. The next prime is 26740966409. The reversal of 26740966399 is 99366904762.

It is not a de Polignac number, because 26740966399 - 2¹ = 26740966397 is a prime.

It is a super-3 number, since 3×26740966399³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26740966397) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 346354 + ... + 416464.

Almost surely, 2^26740966399 is an apocalyptic number.

26740966399 is a deficient number, since it is larger than the sum of its proper divisors (5517284353).

26740966399 is a wasteful number, since it uses less digits than its factorization.

26740966399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70267 (or 70244 counting only the distinct ones).

The product of its (nonzero) digits is 26453952, while the sum is 61.

The spelling of 26740966399 in words is "twenty-six billion, seven hundred forty million, nine hundred sixty-six thousand, three hundred ninety-nine".