21910037999 has 8 divisors (see below), whose sum is σ = 22049897760. Its totient is φ = 21770467936.

The previous prime is 21910037977. The next prime is 21910038041. The reversal of 21910037999 is 99973001912.

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 21910037999 - 2¹² = 21910033903 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 (21910057999) 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, 80342 + ... + 224220.

It is an arithmetic number, because the mean of its divisors is an integer number (2756237220).

Almost surely, 2^21910037999 is an apocalyptic number.

21910037999 is a deficient number, since it is larger than the sum of its proper divisors (139859761).

21910037999 is a wasteful number, since it uses less digits than its factorization.

21910037999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144849.

The product of its (nonzero) digits is 275562, while the sum is 50.

The spelling of 21910037999 in words is "twenty-one billion, nine hundred ten million, thirty-seven thousand, nine hundred ninety-nine".