84215155949593 has 2 divisors, whose sum is σ = 84215155949594. Its totient is φ = 84215155949592.

The previous prime is 84215155949549. The next prime is 84215155949609. The reversal of 84215155949593 is 39594955151248.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46910814627609 + 37304341321984 = 6849147^2 + 6107728^2 .

It is a cyclic number.

It is not a de Polignac number, because 84215155949593 - 2³⁷ = 84077716996121 is a prime.

It is a super-2 number, since 2×84215155949593² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (84215155979593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42107577974796 + 42107577974797.

It is an arithmetic number, because the mean of its divisors is an integer number (42107577974797).

Almost surely, 2^{84215155949593} is an apocalyptic number.

It is an amenable number.

84215155949593 is a deficient number, since it is larger than the sum of its proper divisors (1).

84215155949593 is an equidigital number, since it uses as much as digits as its factorization.

84215155949593 is an evil number, because the sum of its binary digits is even.

The product of its digits is 349920000, while the sum is 70.

The spelling of 84215155949593 in words is "eighty-four trillion, two hundred fifteen billion, one hundred fifty-five million, nine hundred forty-nine thousand, five hundred ninety-three".