84407787854 has 48 divisors (see below), whose sum is σ = 138192496848. Its totient is φ = 38647904256.

The previous prime is 84407787851. The next prime is 84407787857. The reversal of 84407787854 is 45878770448.

It is an interprime number because it is at equal distance from previous prime (84407787851) and next prime (84407787857).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84407787851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64580669 + ... + 64581975.

It is an arithmetic number, because the mean of its divisors is an integer number (2879010351).

Almost surely, 2^84407787854 is an apocalyptic number.

84407787854 is a deficient number, since it is larger than the sum of its proper divisors (53784708994).

84407787854 is a wasteful number, since it uses less digits than its factorization.

84407787854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2709 (or 2696 counting only the distinct ones).

The product of its (nonzero) digits is 56197120, while the sum is 62.

The spelling of 84407787854 in words is "eighty-four billion, four hundred seven million, seven hundred eighty-seven thousand, eight hundred fifty-four".