82637672639 has 4 divisors (see below), whose sum is σ = 87498712224. Its totient is φ = 77776633056.

The previous prime is 82637672627. The next prime is 82637672641. The reversal of 82637672639 is 93627673628.

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

It is a cyclic number.

It is not a de Polignac number, because 82637672639 - 2³⁶ = 13918195903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82637672339) 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, 2430519767 + ... + 2430519800.

It is an arithmetic number, because the mean of its divisors is an integer number (21874678056).

Almost surely, 2^82637672639 is an apocalyptic number.

82637672639 is a deficient number, since it is larger than the sum of its proper divisors (4861039585).

82637672639 is a wasteful number, since it uses less digits than its factorization.

82637672639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4861039584.

The product of its digits is 27433728, while the sum is 59.

The spelling of 82637672639 in words is "eighty-two billion, six hundred thirty-seven million, six hundred seventy-two thousand, six hundred thirty-nine".