20279369089 has 8 divisors (see below), whose sum is σ = 23190910848. Its totient is φ = 17371449600.

The previous prime is 20279369087. The next prime is 20279369101. The reversal of 20279369089 is 98096397202.

It is a happy number.

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 20279369089 - 2¹ = 20279369087 is a prime.

It is a super-2 number, since 2×20279369089² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20279369083) 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, 893557 + ... + 915970.

It is an arithmetic number, because the mean of its divisors is an integer number (2898863856).

Almost surely, 2^20279369089 is an apocalyptic number.

It is an amenable number.

20279369089 is a deficient number, since it is larger than the sum of its proper divisors (2911541759).

20279369089 is a wasteful number, since it uses less digits than its factorization.

20279369089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1811135.

The product of its (nonzero) digits is 2939328, while the sum is 55.

The spelling of 20279369089 in words is "twenty billion, two hundred seventy-nine million, three hundred sixty-nine thousand, eighty-nine".