216400375152 has 120 divisors (see below), whose sum is σ = 667374531824. Its totient is φ = 65036224512.

The previous prime is 216400375067. The next prime is 216400375159. The reversal of 216400375152 is 251573004612.

216400375152 is a `hidden beast` number, since 2 + 1 + 640 + 0 + 3 + 7 + 5 + 1 + 5 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216400375159) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1263673 + ... + 1424664.

Almost surely, 2^216400375152 is an apocalyptic number.

It is an amenable number.

216400375152 is an abundant number, since it is smaller than the sum of its proper divisors (450974156672).

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

216400375152 is a wasteful number, since it uses less digits than its factorization.

216400375152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2688407 (or 2688398 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

Adding to 216400375152 its reverse (251573004612), we get a palindrome (467973379764).

The spelling of 216400375152 in words is "two hundred sixteen billion, four hundred million, three hundred seventy-five thousand, one hundred fifty-two".