26474400447399 has 12 divisors (see below), whose sum is σ = 38579214812736. Its totient is φ = 17493409144512.

The previous prime is 26474400447379. The next prime is 26474400447401. The reversal of 26474400447399 is 99374400447462.

26474400447399 is a `hidden beast` number, since 2 + 6 + 4 + 74 + 4 + 0 + 0 + 4 + 473 + 99 = 666.

It is not a de Polignac number, because 26474400447399 - 2⁹ = 26474400446887 is a prime.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26474400447349) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13015928407 + ... + 13015930440.

It is an arithmetic number, because the mean of its divisors is an integer number (3214934567728).

Almost surely, 2^{26474400447399} is an apocalyptic number.

26474400447399 is a deficient number, since it is larger than the sum of its proper divisors (12104814365337).

26474400447399 is a wasteful number, since it uses less digits than its factorization.

26474400447399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26031858966 (or 26031858963 counting only the distinct ones).

The product of its (nonzero) digits is 146313216, while the sum is 63.

Adding to 26474400447399 its sum of digits (63), we get a palindrome (26474400447462).

The spelling of 26474400447399 in words is "twenty-six trillion, four hundred seventy-four billion, four hundred million, four hundred forty-seven thousand, three hundred ninety-nine".