213800378687 has 8 divisors (see below), whose sum is σ = 244382057472. Its totient is φ = 183228391800.

The previous prime is 213800378663. The next prime is 213800378699. The reversal of 213800378687 is 786873008312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213800378687 - 2²⁶ = 213733269823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213800378087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2375639 + ... + 2463992.

It is an arithmetic number, because the mean of its divisors is an integer number (30547757184).

Almost surely, 2^213800378687 is an apocalyptic number.

213800378687 is a deficient number, since it is larger than the sum of its proper divisors (30581678785).

213800378687 is an equidigital number, since it uses as much as digits as its factorization.

213800378687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4845949.

The product of its (nonzero) digits is 2709504, while the sum is 53.

The spelling of 213800378687 in words is "two hundred thirteen billion, eight hundred million, three hundred seventy-eight thousand, six hundred eighty-seven".