20331542273 has 4 divisors (see below), whose sum is σ = 23236048320. Its totient is φ = 17427036228.

The previous prime is 20331542267. The next prime is 20331542281. The reversal of 20331542273 is 37224513302.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-20331542273 is a prime.

It is a super-2 number, since 2×20331542273² (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 (20331542213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1452253013 + ... + 1452253026.

It is an arithmetic number, because the mean of its divisors is an integer number (5809012080).

Almost surely, 2^20331542273 is an apocalyptic number.

It is an amenable number.

20331542273 is a deficient number, since it is larger than the sum of its proper divisors (2904506047).

20331542273 is an equidigital number, since it uses as much as digits as its factorization.

20331542273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2904506046.

The product of its (nonzero) digits is 30240, while the sum is 32.

The spelling of 20331542273 in words is "twenty billion, three hundred thirty-one million, five hundred forty-two thousand, two hundred seventy-three".