82091008102 has 4 divisors (see below), whose sum is σ = 123136512156. Its totient is φ = 41045504050.

The previous prime is 82091008099. The next prime is 82091008117. The reversal of 82091008102 is 20180019028.

It is a happy number.

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

It is a super-2 number, since 2×82091008102² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20522752024 + ... + 20522752027.

It is an arithmetic number, because the mean of its divisors is an integer number (30784128039).

Almost surely, 2^82091008102 is an apocalyptic number.

82091008102 is a deficient number, since it is larger than the sum of its proper divisors (41045504054).

82091008102 is a wasteful number, since it uses less digits than its factorization.

82091008102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41045504053.

The product of its (nonzero) digits is 2304, while the sum is 31.

The spelling of 82091008102 in words is "eighty-two billion, ninety-one million, eight thousand, one hundred two".