84109023412 has 24 divisors (see below), whose sum is σ = 149718139200. Its totient is φ = 41332722816.

The previous prime is 84109023409. The next prime is 84109023431. The reversal of 84109023412 is 21432090148.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1120764 + ... + 1193452.

It is an arithmetic number, because the mean of its divisors is an integer number (6238255800).

Almost surely, 2^84109023412 is an apocalyptic number.

It is an amenable number.

84109023412 is a deficient number, since it is larger than the sum of its proper divisors (65609115788).

84109023412 is a wasteful number, since it uses less digits than its factorization.

84109023412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77655 (or 77653 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The spelling of 84109023412 in words is "eighty-four billion, one hundred nine million, twenty-three thousand, four hundred twelve".