20883247959 has 16 divisors (see below), whose sum is σ = 32682149888. Its totient is φ = 11610762912.

The previous prime is 20883247943. The next prime is 20883247997. The reversal of 20883247959 is 95974238802.

It is a happy number.

It is not a de Polignac number, because 20883247959 - 2⁴ = 20883247943 is a prime.

It is a super-2 number, since 2×20883247959² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20883247899 and 20883247908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20883247939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13437607 + ... + 13439160.

It is an arithmetic number, because the mean of its divisors is an integer number (2042634368).

Almost surely, 2^20883247959 is an apocalyptic number.

20883247959 is a deficient number, since it is larger than the sum of its proper divisors (11798901929).

20883247959 is a wasteful number, since it uses less digits than its factorization.

20883247959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26876814.

The product of its (nonzero) digits is 8709120, while the sum is 57.

The spelling of 20883247959 in words is "twenty billion, eight hundred eighty-three million, two hundred forty-seven thousand, nine hundred fifty-nine".