26270146721 has 16 divisors (see below), whose sum is σ = 32336976000. Its totient is φ = 20782286208.

The previous prime is 26270146717. The next prime is 26270146729. The reversal of 26270146721 is 12764107262.

It is a cyclic number.

It is not a de Polignac number, because 26270146721 - 2² = 26270146717 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26270146729) 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, 841805 + ... + 872453.

It is an arithmetic number, because the mean of its divisors is an integer number (2021061000).

Almost surely, 2^26270146721 is an apocalyptic number.

It is an amenable number.

26270146721 is a deficient number, since it is larger than the sum of its proper divisors (6066829279).

26270146721 is a wasteful number, since it uses less digits than its factorization.

26270146721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40088.

The product of its (nonzero) digits is 56448, while the sum is 38.

The spelling of 26270146721 in words is "twenty-six billion, two hundred seventy million, one hundred forty-six thousand, seven hundred twenty-one".