538345138443 has 16 divisors (see below), whose sum is σ = 820402932480. Its totient is φ = 307600487136.

The previous prime is 538345138439. The next prime is 538345138517. The reversal of 538345138443 is 344831543835.

It is a happy number.

It is not a de Polignac number, because 538345138443 - 2² = 538345138439 is a prime.

It is not an unprimeable number, because it can be changed into a prime (538345138423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 791548 + ... + 1305081.

It is an arithmetic number, because the mean of its divisors is an integer number (51275183280).

Almost surely, 2^538345138443 is an apocalyptic number.

538345138443 is a deficient number, since it is larger than the sum of its proper divisors (282057794037).

538345138443 is a wasteful number, since it uses less digits than its factorization.

538345138443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2108866.

The product of its digits is 8294400, while the sum is 51.

The spelling of 538345138443 in words is "five hundred thirty-eight billion, three hundred forty-five million, one hundred thirty-eight thousand, four hundred forty-three".