2178387542214 has 128 divisors (see below), whose sum is σ = 5490251020800. Its totient is φ = 634690650240.

The previous prime is 2178387542207. The next prime is 2178387542263. The reversal of 2178387542214 is 4122457838712.

2178387542214 is a `hidden beast` number, since 2 + 1 + 7 + 8 + 3 + 87 + 542 + 2 + 14 = 666.

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 63 ways as a sum of consecutive naturals, for example, 28518517 + ... + 28594799.

It is an arithmetic number, because the mean of its divisors is an integer number (42892586100).

Almost surely, 2^{2178387542214} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2178387542214, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2745125510400).

2178387542214 is an abundant number, since it is smaller than the sum of its proper divisors (3311863478586).

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

2178387542214 is a wasteful number, since it uses less digits than its factorization.

2178387542214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78467 (or 78461 counting only the distinct ones).

The product of its digits is 6021120, while the sum is 54.

The spelling of 2178387542214 in words is "two trillion, one hundred seventy-eight billion, three hundred eighty-seven million, five hundred forty-two thousand, two hundred fourteen".