863406898744 has 32 divisors (see below), whose sum is σ = 1743756275520. Its totient is φ = 398418120576.

The previous prime is 863406898723. The next prime is 863406898801. The reversal of 863406898744 is 447898604368.

863406898744 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 863406898744.

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, 265999 + ... + 1340734.

It is an arithmetic number, because the mean of its divisors is an integer number (54492383610).

Almost surely, 2^863406898744 is an apocalyptic number.

It is an amenable number.

863406898744 is an abundant number, since it is smaller than the sum of its proper divisors (880349376776).

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

863406898744 is a wasteful number, since it uses less digits than its factorization.

863406898744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1611919 (or 1611915 counting only the distinct ones).

The product of its (nonzero) digits is 222953472, while the sum is 67.

The spelling of 863406898744 in words is "eight hundred sixty-three billion, four hundred six million, eight hundred ninety-eight thousand, seven hundred forty-four".