26206666402 has 32 divisors (see below), whose sum is σ = 45681183360. Its totient is φ = 11042714880.

The previous prime is 26206666399. The next prime is 26206666403. The reversal of 26206666402 is 20466660262.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (26206666403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2742549 + ... + 2752087.

It is an arithmetic number, because the mean of its divisors is an integer number (1427536980).

Almost surely, 2^26206666402 is an apocalyptic number.

26206666402 is a deficient number, since it is larger than the sum of its proper divisors (19474516958).

26206666402 is a wasteful number, since it uses less digits than its factorization.

26206666402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12826.

The product of its (nonzero) digits is 248832, while the sum is 40.

The spelling of 26206666402 in words is "twenty-six billion, two hundred six million, six hundred sixty-six thousand, four hundred two".