20490874483 has 4 divisors (see below), whose sum is σ = 20493611560. Its totient is φ = 20488137408.

The previous prime is 20490874477. The next prime is 20490874489. The reversal of 20490874483 is 38447809402.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38447809402 = 2 ⋅19223904701.

It is an interprime number because it is at equal distance from previous prime (20490874477) and next prime (20490874489).

It is a cyclic number.

It is not a de Polignac number, because 20490874483 - 2³³ = 11900939891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20490874489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1357278 + ... + 1372291.

It is an arithmetic number, because the mean of its divisors is an integer number (5123402890).

Almost surely, 2^20490874483 is an apocalyptic number.

20490874483 is a deficient number, since it is larger than the sum of its proper divisors (2737077).

20490874483 is an equidigital number, since it uses as much as digits as its factorization.

20490874483 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2737076.

The product of its (nonzero) digits is 1548288, while the sum is 49.

The spelling of 20490874483 in words is "twenty billion, four hundred ninety million, eight hundred seventy-four thousand, four hundred eighty-three".