21869270973 has 64 divisors (see below), whose sum is σ = 36297676800. Its totient is φ = 12898224000.

The previous prime is 21869270963. The next prime is 21869270993. The reversal of 21869270973 is 37907296812.

It is not a de Polignac number, because 21869270973 - 2⁹ = 21869270461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21869270933) 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 63 ways as a sum of consecutive naturals, for example, 5343658 + ... + 5347748.

It is an arithmetic number, because the mean of its divisors is an integer number (567151200).

Almost surely, 2^21869270973 is an apocalyptic number.

It is an amenable number.

21869270973 is a deficient number, since it is larger than the sum of its proper divisors (14428405827).

21869270973 is a wasteful number, since it uses less digits than its factorization.

21869270973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4591 (or 4585 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The spelling of 21869270973 in words is "twenty-one billion, eight hundred sixty-nine million, two hundred seventy thousand, nine hundred seventy-three".