20243952373 has 4 divisors (see below), whose sum is σ = 20423102508. Its totient is φ = 20064802240.

The previous prime is 20243952361. The next prime is 20243952409. The reversal of 20243952373 is 37325934202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8764329924 + 11479622449 = 93618^2 + 107143^2 .

It is a cyclic number.

It is not a de Polignac number, because 20243952373 - 2²⁵ = 20210397941 is a prime.

It is a super-2 number, since 2×20243952373² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20243952353) 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, 89574898 + ... + 89575123.

It is an arithmetic number, because the mean of its divisors is an integer number (5105775627).

Almost surely, 2^20243952373 is an apocalyptic number.

It is an amenable number.

20243952373 is a deficient number, since it is larger than the sum of its proper divisors (179150135).

20243952373 is a wasteful number, since it uses less digits than its factorization.

20243952373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179150134.

The product of its (nonzero) digits is 272160, while the sum is 40.

The spelling of 20243952373 in words is "twenty billion, two hundred forty-three million, nine hundred fifty-two thousand, three hundred seventy-three".