20034473643407 has 4 divisors (see below), whose sum is σ = 20035474836456. Its totient is φ = 20033472450360.

The previous prime is 20034473643397. The next prime is 20034473643491. The reversal of 20034473643407 is 70434637443002.

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-20034473643407 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 (20034473543407) 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, 500566508 + ... + 500606529.

It is an arithmetic number, because the mean of its divisors is an integer number (5008868709114).

Almost surely, 2^{20034473643407} is an apocalyptic number.

20034473643407 is a deficient number, since it is larger than the sum of its proper divisors (1001193049).

20034473643407 is a wasteful number, since it uses less digits than its factorization.

20034473643407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001193048.

The product of its (nonzero) digits is 4064256, while the sum is 47.

The spelling of 20034473643407 in words is "twenty trillion, thirty-four billion, four hundred seventy-three million, six hundred forty-three thousand, four hundred seven".