216434378592 has 96 divisors (see below), whose sum is σ = 633614335200. Its totient is φ = 71876519424.

The previous prime is 216434378549. The next prime is 216434378617. The reversal of 216434378592 is 295873434612.

216434378592 is a `hidden beast` number, since 2 + 1 + 6 + 4 + 3 + 43 + 7 + 8 + 592 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 233203 + ... + 698034.

It is an arithmetic number, because the mean of its divisors is an integer number (6600149325).

Almost surely, 2^216434378592 is an apocalyptic number.

It is an amenable number.

216434378592 is an abundant number, since it is smaller than the sum of its proper divisors (417179956608).

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

216434378592 is a wasteful number, since it uses less digits than its factorization.

216434378592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931525 (or 931511 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 54.

The spelling of 216434378592 in words is "two hundred sixteen billion, four hundred thirty-four million, three hundred seventy-eight thousand, five hundred ninety-two".