82638851721746 has 16 divisors (see below), whose sum is σ = 124080581014080. Its totient is φ = 41278676891760.

The previous prime is 82638851721707. The next prime is 82638851721761. The reversal of 82638851721746 is 64712715883628.

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, 4067915 + ... + 13484273.

It is an arithmetic number, because the mean of its divisors is an integer number (7755036313380).

Almost surely, 2^{82638851721746} is an apocalyptic number.

82638851721746 is a deficient number, since it is larger than the sum of its proper divisors (41441729292334).

82638851721746 is a wasteful number, since it uses less digits than its factorization.

82638851721746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9420689.

The product of its digits is 216760320, while the sum is 68.

The spelling of 82638851721746 in words is "eighty-two trillion, six hundred thirty-eight billion, eight hundred fifty-one million, seven hundred twenty-one thousand, seven hundred forty-six".