20034523999 has 4 divisors (see below), whose sum is σ = 22896598864. Its totient is φ = 17172449136.

The previous prime is 20034523969. The next prime is 20034524033. The reversal of 20034523999 is 99932543002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20034523999 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 (20034523969) 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, 1431037422 + ... + 1431037435.

It is an arithmetic number, because the mean of its divisors is an integer number (5724149716).

Almost surely, 2^20034523999 is an apocalyptic number.

20034523999 is a deficient number, since it is larger than the sum of its proper divisors (2862074865).

20034523999 is an equidigital number, since it uses as much as digits as its factorization.

20034523999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2862074864.

The product of its (nonzero) digits is 524880, while the sum is 46.

The spelling of 20034523999 in words is "twenty billion, thirty-four million, five hundred twenty-three thousand, nine hundred ninety-nine".