82665578722 has 16 divisors (see below), whose sum is σ = 125116683552. Its totient is φ = 40960140480.

The previous prime is 82665578693. The next prime is 82665578759. The reversal of 82665578722 is 22787556628.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1484833 + ... + 1539499.

It is an arithmetic number, because the mean of its divisors is an integer number (7819792722).

Almost surely, 2^82665578722 is an apocalyptic number.

82665578722 is a deficient number, since it is larger than the sum of its proper divisors (42451104830).

82665578722 is a wasteful number, since it uses less digits than its factorization.

82665578722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61473.

The product of its digits is 22579200, while the sum is 58.

The spelling of 82665578722 in words is "eighty-two billion, six hundred sixty-five million, five hundred seventy-eight thousand, seven hundred twenty-two".