20658425889 has 8 divisors (see below), whose sum is σ = 27638577792. Its totient is φ = 13725278960.

The previous prime is 20658425833. The next prime is 20658425897. The reversal of 20658425889 is 98852485602.

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 20658425889 - 2²³ = 20650037281 is a prime.

It is a super-2 number, since 2×20658425889² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20658425989) 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, 11750217 + ... + 11751974.

It is an arithmetic number, because the mean of its divisors is an integer number (3454822224).

Almost surely, 2^20658425889 is an apocalyptic number.

It is an amenable number.

20658425889 is a deficient number, since it is larger than the sum of its proper divisors (6980151903).

20658425889 is a wasteful number, since it uses less digits than its factorization.

20658425889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23502487.

The product of its (nonzero) digits is 11059200, while the sum is 57.

The spelling of 20658425889 in words is "twenty billion, six hundred fifty-eight million, four hundred twenty-five thousand, eight hundred eighty-nine".