20023346309465 has 4 divisors (see below), whose sum is σ = 24028015571364. Its totient is φ = 16018677047568.

The previous prime is 20023346309453. The next prime is 20023346309507. The reversal of 20023346309465 is 56490364332002.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4190491490761 + 15832854818704 = 2047069^2 + 3979052^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20023346309465 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2002334630942 + ... + 2002334630951.

It is an arithmetic number, because the mean of its divisors is an integer number (6007003892841).

Almost surely, 2^{20023346309465} is an apocalyptic number.

It is an amenable number.

20023346309465 is a deficient number, since it is larger than the sum of its proper divisors (4004669261899).

20023346309465 is an equidigital number, since it uses as much as digits as its factorization.

20023346309465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4004669261898.

The product of its (nonzero) digits is 2799360, while the sum is 47.

The spelling of 20023346309465 in words is "twenty trillion, twenty-three billion, three hundred forty-six million, three hundred nine thousand, four hundred sixty-five".