864084040420 has 12 divisors (see below), whose sum is σ = 1814576484924. Its totient is φ = 345633616160.

The previous prime is 864084040403. The next prime is 864084040451. The reversal of 864084040420 is 24040480468.

864084040420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 166498273764 + 697585766656 = 408042^2 + 835216^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21602100991 + ... + 21602101030.

It is an arithmetic number, because the mean of its divisors is an integer number (151214707077).

Almost surely, 2^864084040420 is an apocalyptic number.

It is an amenable number.

864084040420 is an abundant number, since it is smaller than the sum of its proper divisors (950492444504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

864084040420 is a wasteful number, since it uses less digits than its factorization.

864084040420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43204202030 (or 43204202028 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 40.

The spelling of 864084040420 in words is "eight hundred sixty-four billion, eighty-four million, forty thousand, four hundred twenty".