20371823413 has 4 divisors (see below), whose sum is σ = 20372670720. Its totient is φ = 20370976108.

The previous prime is 20371823369. The next prime is 20371823441. The reversal of 20371823413 is 31432817302.

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 cyclic number.

It is not a de Polignac number, because 20371823413 - 2¹³ = 20371815221 is a prime.

It is a super-2 number, since 2×20371823413² (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 (20371823443) 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, 386503 + ... + 436036.

It is an arithmetic number, because the mean of its divisors is an integer number (5093167680).

Almost surely, 2^20371823413 is an apocalyptic number.

It is an amenable number.

20371823413 is a deficient number, since it is larger than the sum of its proper divisors (847307).

20371823413 is an equidigital number, since it uses as much as digits as its factorization.

20371823413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847306.

The product of its (nonzero) digits is 24192, while the sum is 34.

The spelling of 20371823413 in words is "twenty billion, three hundred seventy-one million, eight hundred twenty-three thousand, four hundred thirteen".