20281249883 has 8 divisors (see below), whose sum is σ = 21527823600. Its totient is φ = 19040627200.

The previous prime is 20281249873. The next prime is 20281249943. The reversal of 20281249883 is 38894218202.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20281249883 is a prime.

It is a super-2 number, since 2×20281249883² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20281249843) 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, 1480733 + ... + 1494366.

It is an arithmetic number, because the mean of its divisors is an integer number (2690977950).

Almost surely, 2^20281249883 is an apocalyptic number.

20281249883 is a deficient number, since it is larger than the sum of its proper divisors (1246573717).

20281249883 is a wasteful number, since it uses less digits than its factorization.

20281249883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2975517.

The product of its (nonzero) digits is 442368, while the sum is 47.

The spelling of 20281249883 in words is "twenty billion, two hundred eighty-one million, two hundred forty-nine thousand, eight hundred eighty-three".