82155427666731 has 24 divisors (see below), whose sum is σ = 118721784656384. Its totient is φ = 54745903583280.

The previous prime is 82155427666729. The next prime is 82155427666757. The reversal of 82155427666731 is 13766672455128.

It is not a de Polignac number, because 82155427666731 - 2¹ = 82155427666729 is a prime.

It is a super-2 number, since 2×82155427666731² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82155427662731) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 327438930 + ... + 327689736.

Almost surely, 2^{82155427666731} is an apocalyptic number.

82155427666731 is a deficient number, since it is larger than the sum of its proper divisors (36566356989653).

82155427666731 is a wasteful number, since it uses less digits than its factorization.

82155427666731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266871 (or 266868 counting only the distinct ones).

The product of its digits is 101606400, while the sum is 63.

The spelling of 82155427666731 in words is "eighty-two trillion, one hundred fifty-five billion, four hundred twenty-seven million, six hundred sixty-six thousand, seven hundred thirty-one".