20899909299 has 8 divisors (see below), whose sum is σ = 27906876352. Its totient is φ = 13913107560.

The previous prime is 20899909297. The next prime is 20899909301. The reversal of 20899909299 is 99290999802.

It is an interprime number because it is at equal distance from previous prime (20899909297) and next prime (20899909301).

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

It is not a de Polignac number, because 20899909299 - 2¹ = 20899909297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20899909297) 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, 5038909 + ... + 5043054.

It is an arithmetic number, because the mean of its divisors is an integer number (3488359544).

Almost surely, 2^20899909299 is an apocalyptic number.

20899909299 is a deficient number, since it is larger than the sum of its proper divisors (7006967053).

20899909299 is a wasteful number, since it uses less digits than its factorization.

20899909299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10082657.

The product of its (nonzero) digits is 17006112, while the sum is 66.

The spelling of 20899909299 in words is "twenty billion, eight hundred ninety-nine million, nine hundred nine thousand, two hundred ninety-nine".