84623636923 has 4 divisors (see below), whose sum is σ = 96712727920. Its totient is φ = 72534545928.

The previous prime is 84623636899. The next prime is 84623636927. The reversal of 84623636923 is 32963632648.

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-84623636923 is a prime.

It is a super-2 number, since 2×84623636923² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84623636927) 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, 6044545488 + ... + 6044545501.

It is an arithmetic number, because the mean of its divisors is an integer number (24178181980).

Almost surely, 2^84623636923 is an apocalyptic number.

84623636923 is a deficient number, since it is larger than the sum of its proper divisors (12089090997).

84623636923 is a wasteful number, since it uses less digits than its factorization.

84623636923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12089090996.

The product of its digits is 6718464, while the sum is 52.

The spelling of 84623636923 in words is "eighty-four billion, six hundred twenty-three million, six hundred thirty-six thousand, nine hundred twenty-three".