26299720401 has 16 divisors (see below), whose sum is σ = 35254934400. Its totient is φ = 17438889600.

The previous prime is 26299720399. The next prime is 26299720493. The reversal of 26299720401 is 10402799262.

It is not a de Polignac number, because 26299720401 - 2¹ = 26299720399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26299720901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2222701 + ... + 2234501.

It is an arithmetic number, because the mean of its divisors is an integer number (2203433400).

Almost surely, 2^26299720401 is an apocalyptic number.

It is an amenable number.

26299720401 is a deficient number, since it is larger than the sum of its proper divisors (8955213999).

26299720401 is a wasteful number, since it uses less digits than its factorization.

26299720401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15736.

The product of its (nonzero) digits is 108864, while the sum is 42.

The spelling of 26299720401 in words is "twenty-six billion, two hundred ninety-nine million, seven hundred twenty thousand, four hundred one".