20364976843 has 8 divisors (see below), whose sum is σ = 20625554880. Its totient is φ = 20104468800.

The previous prime is 20364976837. The next prime is 20364976913. The reversal of 20364976843 is 34867946302.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20364976843 - 2²⁹ = 19828105931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20364976543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 825321 + ... + 849637.

It is an arithmetic number, because the mean of its divisors is an integer number (2578194360).

Almost surely, 2^20364976843 is an apocalyptic number.

20364976843 is a deficient number, since it is larger than the sum of its proper divisors (260578037).

20364976843 is a wasteful number, since it uses less digits than its factorization.

20364976843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34997.

The product of its (nonzero) digits is 5225472, while the sum is 52.

The spelling of 20364976843 in words is "twenty billion, three hundred sixty-four million, nine hundred seventy-six thousand, eight hundred forty-three".