2138404280399 has 8 divisors (see below), whose sum is σ = 2171336499888. Its totient is φ = 2105501935680.

The previous prime is 2138404280321. The next prime is 2138404280423. The reversal of 2138404280399 is 9930824048312.

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 2138404280399 - 2²⁴ = 2138387503183 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2138404280399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2138404283399) 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, 7324412 + ... + 7610769.

It is an arithmetic number, because the mean of its divisors is an integer number (271417062486).

Almost surely, 2^{2138404280399} is an apocalyptic number.

2138404280399 is a deficient number, since it is larger than the sum of its proper divisors (32932219489).

2138404280399 is a wasteful number, since it uses less digits than its factorization.

2138404280399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14937385.

The product of its (nonzero) digits is 2985984, while the sum is 53.

The spelling of 2138404280399 in words is "two trillion, one hundred thirty-eight billion, four hundred four million, two hundred eighty thousand, three hundred ninety-nine".