20450346013147 has 4 divisors (see below), whose sum is σ = 20462011928200. Its totient is φ = 20438680098096.

The previous prime is 20450346013121. The next prime is 20450346013151. The reversal of 20450346013147 is 74131064305402.

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-20450346013147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20450346010147) 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, 5832954897 + ... + 5832958402.

It is an arithmetic number, because the mean of its divisors is an integer number (5115502982050).

Almost surely, 2^{20450346013147} is an apocalyptic number.

20450346013147 is a deficient number, since it is larger than the sum of its proper divisors (11665915053).

20450346013147 is a wasteful number, since it uses less digits than its factorization.

20450346013147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11665915052.

The product of its (nonzero) digits is 241920, while the sum is 40.

The spelling of 20450346013147 in words is "twenty trillion, four hundred fifty billion, three hundred forty-six million, thirteen thousand, one hundred forty-seven".