21038008597 has 8 divisors (see below), whose sum is σ = 21250944000. Its totient is φ = 20825812224.

The previous prime is 21038008583. The next prime is 21038008613. The reversal of 21038008597 is 79580083012.

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

It is a cyclic number.

It is not a de Polignac number, because 21038008597 - 2⁷ = 21038008469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21038008297) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127447 + ... + 241492.

It is an arithmetic number, because the mean of its divisors is an integer number (2656368000).

Almost surely, 2^21038008597 is an apocalyptic number.

It is an amenable number.

21038008597 is a deficient number, since it is larger than the sum of its proper divisors (212935403).

21038008597 is a wasteful number, since it uses less digits than its factorization.

21038008597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369515.

The product of its (nonzero) digits is 120960, while the sum is 43.

The spelling of 21038008597 in words is "twenty-one billion, thirty-eight million, eight thousand, five hundred ninety-seven".