21260067795 has 12 divisors (see below), whose sum is σ = 36850784256. Its totient is φ = 11338702800.

The previous prime is 21260067739. The next prime is 21260067797. The reversal of 21260067795 is 59776006212.

It is not a de Polignac number, because 21260067795 - 2¹⁹ = 21259543507 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 472445951 = 21260067795 / (2 + 1 + 2 + 6 + 0 + 0 + 6 + 7 + 7 + 9 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 21260067795.

It is not an unprimeable number, because it can be changed into a prime (21260067797) 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, 236222931 + ... + 236223020.

It is an arithmetic number, because the mean of its divisors is an integer number (3070898688).

Almost surely, 2^21260067795 is an apocalyptic number.

21260067795 is a deficient number, since it is larger than the sum of its proper divisors (15590716461).

21260067795 is a wasteful number, since it uses less digits than its factorization.

21260067795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472445962 (or 472445959 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The spelling of 21260067795 in words is "twenty-one billion, two hundred sixty million, sixty-seven thousand, seven hundred ninety-five".