21973041039 has 8 divisors (see below), whose sum is σ = 29343820672. Its totient is φ = 14625477720.

The previous prime is 21973041037. The next prime is 21973041043. The reversal of 21973041039 is 93014037912.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21973041039 - 2¹ = 21973041037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21973040988 and 21973041006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21973041031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5801869 + ... + 5805654.

It is an arithmetic number, because the mean of its divisors is an integer number (3667977584).

Almost surely, 2^21973041039 is an apocalyptic number.

21973041039 is a deficient number, since it is larger than the sum of its proper divisors (7370779633).

21973041039 is a wasteful number, since it uses less digits than its factorization.

21973041039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11608157.

The product of its (nonzero) digits is 40824, while the sum is 39.

The spelling of 21973041039 in words is "twenty-one billion, nine hundred seventy-three million, forty-one thousand, thirty-nine".