20374623359 has 4 divisors (see below), whose sum is σ = 20708633640. Its totient is φ = 20040613080.

The previous prime is 20374623349. The next prime is 20374623361. The reversal of 20374623359 is 95332647302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95332647302 = 2 ⋅47666323651.

It is a cyclic number.

It is not a de Polignac number, because 20374623359 - 2¹² = 20374619263 is a prime.

It is a super-2 number, since 2×20374623359² (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 (20374623319) 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, 167005049 + ... + 167005170.

It is an arithmetic number, because the mean of its divisors is an integer number (5177158410).

Almost surely, 2^20374623359 is an apocalyptic number.

20374623359 is a deficient number, since it is larger than the sum of its proper divisors (334010281).

20374623359 is an equidigital number, since it uses as much as digits as its factorization.

20374623359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334010280.

The product of its (nonzero) digits is 816480, while the sum is 44.

The spelling of 20374623359 in words is "twenty billion, three hundred seventy-four million, six hundred twenty-three thousand, three hundred fifty-nine".