214534387440 has 60 divisors (see below), whose sum is σ = 720477986904. Its totient is φ = 57209169792.

The previous prime is 214534387427. The next prime is 214534387447. The reversal of 214534387440 is 44783435412.

214534387440 is a `hidden beast` number, since 2 + 1 + 4 + 534 + 3 + 8 + 74 + 40 = 666.

214534387440 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214534387447) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 148981494 + ... + 148982933.

Almost surely, 2^214534387440 is an apocalyptic number.

214534387440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

214534387440 is an abundant number, since it is smaller than the sum of its proper divisors (505943599464).

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

214534387440 is a wasteful number, since it uses less digits than its factorization.

214534387440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297964446 (or 297964437 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 45.

The spelling of 214534387440 in words is "two hundred fourteen billion, five hundred thirty-four million, three hundred eighty-seven thousand, four hundred forty".