20181297023 has 8 divisors (see below), whose sum is σ = 21372637392. Its totient is φ = 18990423936.

The previous prime is 20181297007. The next prime is 20181297029. The reversal of 20181297023 is 32079218102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20181297023 - 2⁴ = 20181297007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20181297029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25865 + ... + 202562.

It is an arithmetic number, because the mean of its divisors is an integer number (2671579674).

Almost surely, 2^20181297023 is an apocalyptic number.

20181297023 is a deficient number, since it is larger than the sum of its proper divisors (1191340369).

20181297023 is a wasteful number, since it uses less digits than its factorization.

20181297023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233641.

The product of its (nonzero) digits is 12096, while the sum is 35.

The spelling of 20181297023 in words is "twenty billion, one hundred eighty-one million, two hundred ninety-seven thousand, twenty-three".