84615506115079 has 2 divisors, whose sum is σ = 84615506115080. Its totient is φ = 84615506115078.

The previous prime is 84615506115053. The next prime is 84615506115103. The reversal of 84615506115079 is 97051160551648.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84615506115079 - 2⁵ = 84615506115047 is a prime.

It is a super-2 number, since 2×84615506115079² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84615506115029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42307753057539 + 42307753057540.

It is an arithmetic number, because the mean of its divisors is an integer number (42307753057540).

Almost surely, 2^{84615506115079} is an apocalyptic number.

84615506115079 is a deficient number, since it is larger than the sum of its proper divisors (1).

84615506115079 is an equidigital number, since it uses as much as digits as its factorization.

84615506115079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072000, while the sum is 58.

The spelling of 84615506115079 in words is "eighty-four trillion, six hundred fifteen billion, five hundred six million, one hundred fifteen thousand, seventy-nine".