20023273437 has 16 divisors (see below), whose sum is σ = 26740264320. Its totient is φ = 13327588352.

The previous prime is 20023273433. The next prime is 20023273463. The reversal of 20023273437 is 73437232002.

It is a cyclic number.

It is not a de Polignac number, because 20023273437 - 2² = 20023273433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20023273398 and 20023273407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20023273433) 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, 10465993 + ... + 10467905.

It is an arithmetic number, because the mean of its divisors is an integer number (1671266520).

Almost surely, 2^20023273437 is an apocalyptic number.

It is an amenable number.

20023273437 is a deficient number, since it is larger than the sum of its proper divisors (6716990883).

20023273437 is a wasteful number, since it uses less digits than its factorization.

20023273437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5652.

The product of its (nonzero) digits is 42336, while the sum is 33.

The spelling of 20023273437 in words is "twenty billion, twenty-three million, two hundred seventy-three thousand, four hundred thirty-seven".