82645685128730 has 16 divisors (see below), whose sum is σ = 148762863960480. Its totient is φ = 33058133889552.

The previous prime is 82645685128729. The next prime is 82645685128813. The reversal of 82645685128730 is 3782158654628.

It is a happy number.

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, 15026840 + ... + 19776179.

It is an arithmetic number, because the mean of its divisors is an integer number (9297678997530).

Almost surely, 2^{82645685128730} is an apocalyptic number.

82645685128730 is a deficient number, since it is larger than the sum of its proper divisors (66117178831750).

82645685128730 is a wasteful number, since it uses less digits than its factorization.

82645685128730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35040493.

The product of its (nonzero) digits is 154828800, while the sum is 65.

The spelling of 82645685128730 in words is "eighty-two trillion, six hundred forty-five billion, six hundred eighty-five million, one hundred twenty-eight thousand, seven hundred thirty".