21799048737 has 8 divisors (see below), whose sum is σ = 29066471680. Its totient is φ = 14532162480.

The previous prime is 21799048693. The next prime is 21799048753. The reversal of 21799048737 is 73784099712.

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

It is not a de Polignac number, because 21799048737 - 2²⁴ = 21782271521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21799040737) 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, 27214 + ... + 210567.

It is an arithmetic number, because the mean of its divisors is an integer number (3633308960).

Almost surely, 2^21799048737 is an apocalyptic number.

It is an amenable number.

21799048737 is a deficient number, since it is larger than the sum of its proper divisors (7267422943).

21799048737 is a wasteful number, since it uses less digits than its factorization.

21799048737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268343.

The product of its (nonzero) digits is 5334336, while the sum is 57.

The spelling of 21799048737 in words is "twenty-one billion, seven hundred ninety-nine million, forty-eight thousand, seven hundred thirty-seven".