21499132039 has 8 divisors (see below), whose sum is σ = 26804112768. Its totient is φ = 16752570360.

The previous prime is 21499132037. The next prime is 21499132063. The reversal of 21499132039 is 93023199412.

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 21499132039 - 2¹ = 21499132037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21499131986 and 21499132004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21499132037) 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, 139604677 + ... + 139604830.

It is an arithmetic number, because the mean of its divisors is an integer number (3350514096).

Almost surely, 2^21499132039 is an apocalyptic number.

21499132039 is a deficient number, since it is larger than the sum of its proper divisors (5304980729).

21499132039 is a wasteful number, since it uses less digits than its factorization.

21499132039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279209525.

The product of its (nonzero) digits is 104976, while the sum is 43.

The spelling of 21499132039 in words is "twenty-one billion, four hundred ninety-nine million, one hundred thirty-two thousand, thirty-nine".