2138885353542 has 64 divisors (see below), whose sum is σ = 4920390388224. Its totient is φ = 607173719040.

The previous prime is 2138885353529. The next prime is 2138885353547. The reversal of 2138885353542 is 2453535888312.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2138885353547) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22962928 + ... + 23055884.

It is an arithmetic number, because the mean of its divisors is an integer number (76881099816).

Almost surely, 2^{2138885353542} is an apocalyptic number.

2138885353542 is an abundant number, since it is smaller than the sum of its proper divisors (2781505034682).

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

2138885353542 is a wasteful number, since it uses less digits than its factorization.

2138885353542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96493.

The product of its digits is 27648000, while the sum is 57.

The spelling of 2138885353542 in words is "two trillion, one hundred thirty-eight billion, eight hundred eighty-five million, three hundred fifty-three thousand, five hundred forty-two".