82370366606781 has 18 divisors (see below), whose sum is σ = 130779030179070. Its totient is φ = 49921434306480.

The previous prime is 82370366606777. The next prime is 82370366606797. The reversal of 82370366606781 is 18760666307328.

It can be written as a sum of positive squares in only one way, i.e., 46138803428025 + 36231563178756 = 6792555^2 + 6019266^2 .

It is not a de Polignac number, because 82370366606781 - 2² = 82370366606777 is a prime.

It is a super-2 number, since 2×82370366606781² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82370366606761) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 37819267326 + ... + 37819269503.

It is an arithmetic number, because the mean of its divisors is an integer number (7265501676615).

Almost surely, 2^{82370366606781} is an apocalyptic number.

It is an amenable number.

82370366606781 is a deficient number, since it is larger than the sum of its proper divisors (48408663572289).

82370366606781 is a wasteful number, since it uses less digits than its factorization.

82370366606781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75638536857 (or 75638536843 counting only the distinct ones).

The product of its (nonzero) digits is 73156608, while the sum is 63.

The spelling of 82370366606781 in words is "eighty-two trillion, three hundred seventy billion, three hundred sixty-six million, six hundred six thousand, seven hundred eighty-one".