42685645815097 has 2 divisors, whose sum is σ = 42685645815098. Its totient is φ = 42685645815096.

The previous prime is 42685645815053. The next prime is 42685645815161. The reversal of 42685645815097 is 79051854658624.

42685645815097 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37050059439376 + 5635586375721 = 6086876^2 + 2373939^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42685645815097 is a prime.

It is a super-3 number, since 3×42685645815097³ (a number of 42 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (42685645815047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21342822907548 + 21342822907549.

It is an arithmetic number, because the mean of its divisors is an integer number (21342822907549).

Almost surely, 2^{42685645815097} is an apocalyptic number.

It is an amenable number.

42685645815097 is a deficient number, since it is larger than the sum of its proper divisors (1).

42685645815097 is an equidigital number, since it uses as much as digits as its factorization.

42685645815097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608000, while the sum is 70.

The spelling of 42685645815097 in words is "forty-two trillion, six hundred eighty-five billion, six hundred forty-five million, eight hundred fifteen thousand, ninety-seven".