82787166048623 has 16 divisors (see below), whose sum is σ = 87432384990720. Its totient is φ = 78170771290176.

The previous prime is 82787166048607. The next prime is 82787166048637. The reversal of 82787166048623 is 32684066178728.

It is a cyclic number.

It is not a de Polignac number, because 82787166048623 - 2⁴ = 82787166048607 is a prime.

It is a super-2 number, since 2×82787166048623² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82787166848623) 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, 126933290 + ... + 127583832.

It is an arithmetic number, because the mean of its divisors is an integer number (5464524061920).

Almost surely, 2^{82787166048623} is an apocalyptic number.

82787166048623 is a deficient number, since it is larger than the sum of its proper divisors (4645218942097).

82787166048623 is a wasteful number, since it uses less digits than its factorization.

82787166048623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672686.

The product of its (nonzero) digits is 260112384, while the sum is 68.

The spelling of 82787166048623 in words is "eighty-two trillion, seven hundred eighty-seven billion, one hundred sixty-six million, forty-eight thousand, six hundred twenty-three".