82347632639 has 4 divisors (see below), whose sum is σ = 82356382920. Its totient is φ = 82338882360.

The previous prime is 82347632623. The next prime is 82347632701. The reversal of 82347632639 is 93623674328.

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 82347632639 - 2⁴ = 82347632623 is a prime.

It is a super-2 number, since 2×82347632639² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82347692639) 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, 4361009 + ... + 4379850.

It is an arithmetic number, because the mean of its divisors is an integer number (20589095730).

Almost surely, 2^82347632639 is an apocalyptic number.

82347632639 is a deficient number, since it is larger than the sum of its proper divisors (8750281).

82347632639 is an equidigital number, since it uses as much as digits as its factorization.

82347632639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8750280.

The product of its digits is 7838208, while the sum is 53.

The spelling of 82347632639 in words is "eighty-two billion, three hundred forty-seven million, six hundred thirty-two thousand, six hundred thirty-nine".