20145774233 has 16 divisors (see below), whose sum is σ = 22945608000. Its totient is φ = 17533817280.

The previous prime is 20145774217. The next prime is 20145774263. The reversal of 20145774233 is 33247754102.

It is a cyclic number.

It is not a de Polignac number, because 20145774233 - 2⁴ = 20145774217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20145774203) 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, 141158 + ... + 245391.

It is an arithmetic number, because the mean of its divisors is an integer number (1434100500).

Almost surely, 2^20145774233 is an apocalyptic number.

It is an amenable number.

20145774233 is a deficient number, since it is larger than the sum of its proper divisors (2799833767).

20145774233 is a wasteful number, since it uses less digits than its factorization.

20145774233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386792.

The product of its (nonzero) digits is 141120, while the sum is 38.

The spelling of 20145774233 in words is "twenty billion, one hundred forty-five million, seven hundred seventy-four thousand, two hundred thirty-three".