84549117907 has 2 divisors, whose sum is σ = 84549117908. Its totient is φ = 84549117906.

The previous prime is 84549117871. The next prime is 84549117971. The reversal of 84549117907 is 70971194548.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84549117907 - 2¹⁵ = 84549085139 is a prime.

It is a super-3 number, since 3×84549117907³ (a number of 34 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (84549117977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42274558953 + 42274558954.

It is an arithmetic number, because the mean of its divisors is an integer number (42274558954).

Almost surely, 2^84549117907 is an apocalyptic number.

84549117907 is a deficient number, since it is larger than the sum of its proper divisors (1).

84549117907 is an equidigital number, since it uses as much as digits as its factorization.

84549117907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2540160, while the sum is 55.

The spelling of 84549117907 in words is "eighty-four billion, five hundred forty-nine million, one hundred seventeen thousand, nine hundred seven".