21299892607 has 8 divisors (see below), whose sum is σ = 24344364032. Its totient is φ = 18255828600.

The previous prime is 21299892599. The next prime is 21299892643. The reversal of 21299892607 is 70629899212.

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 21299892607 - 2³ = 21299892599 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 (21299892697) 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, 19882 + ... + 207352.

It is an arithmetic number, because the mean of its divisors is an integer number (3043045504).

Almost surely, 2^21299892607 is an apocalyptic number.

21299892607 is a deficient number, since it is larger than the sum of its proper divisors (3044471425).

21299892607 is a wasteful number, since it uses less digits than its factorization.

21299892607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203709.

The product of its (nonzero) digits is 1959552, while the sum is 55.

The spelling of 21299892607 in words is "twenty-one billion, two hundred ninety-nine million, eight hundred ninety-two thousand, six hundred seven".