82154039745 has 16 divisors (see below), whose sum is σ = 131516913600. Its totient is φ = 43792004544.

The previous prime is 82154039729. The next prime is 82154039749. The reversal of 82154039745 is 54793045128.

It is not a de Polignac number, because 82154039745 - 2⁴ = 82154039729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 82154039694 and 82154039703.

It is not an unprimeable number, because it can be changed into a prime (82154039749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1438770 + ... + 1494779.

It is an arithmetic number, because the mean of its divisors is an integer number (8219807100).

Almost surely, 2^82154039745 is an apocalyptic number.

It is an amenable number.

82154039745 is a deficient number, since it is larger than the sum of its proper divisors (49362873855).

82154039745 is a wasteful number, since it uses less digits than its factorization.

82154039745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2935424.

The product of its (nonzero) digits is 1209600, while the sum is 48.

The spelling of 82154039745 in words is "eighty-two billion, one hundred fifty-four million, thirty-nine thousand, seven hundred forty-five".