20706502089 has 24 divisors (see below), whose sum is σ = 34166609472. Its totient is φ = 10922109120.

The previous prime is 20706502057. The next prime is 20706502097. The reversal of 20706502089 is 98020560702.

It is a happy number.

It is not a de Polignac number, because 20706502089 - 2⁵ = 20706502057 is a prime.

It is a super-2 number, since 2×20706502089² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (20706502009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2913682 + ... + 2920779.

It is an arithmetic number, because the mean of its divisors is an integer number (1423608728).

Almost surely, 2^20706502089 is an apocalyptic number.

It is an amenable number.

20706502089 is a deficient number, since it is larger than the sum of its proper divisors (13460107383).

20706502089 is a wasteful number, since it uses less digits than its factorization.

20706502089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5834497 (or 5834484 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The spelling of 20706502089 in words is "twenty billion, seven hundred six million, five hundred two thousand, eighty-nine".