26420742705 has 16 divisors (see below), whose sum is σ = 48312215424. Its totient is φ = 12078053760.

The previous prime is 26420742679. The next prime is 26420742707. The reversal of 26420742705 is 50724702462.

It is a happy number.

It is not a de Polignac number, because 26420742705 - 2⁶ = 26420742641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26420742707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125812956 + ... + 125813165.

It is an arithmetic number, because the mean of its divisors is an integer number (3019513464).

Almost surely, 2^26420742705 is an apocalyptic number.

It is an amenable number.

26420742705 is a deficient number, since it is larger than the sum of its proper divisors (21891472719).

26420742705 is a wasteful number, since it uses less digits than its factorization.

26420742705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251626136.

The product of its (nonzero) digits is 188160, while the sum is 39.

The spelling of 26420742705 in words is "twenty-six billion, four hundred twenty million, seven hundred forty-two thousand, seven hundred five".