538187042855806 has 4 divisors (see below), whose sum is σ = 807280564283712. Its totient is φ = 269093521427902.

The previous prime is 538187042855801. The next prime is 538187042855809. The reversal of 538187042855806 is 608558240781835.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538187042855801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134546760713950 + ... + 134546760713953.

It is an arithmetic number, because the mean of its divisors is an integer number (201820141070928).

Almost surely, 2^{538187042855806} is an apocalyptic number.

538187042855806 is a deficient number, since it is larger than the sum of its proper divisors (269093521427906).

538187042855806 is a wasteful number, since it uses less digits than its factorization.

538187042855806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269093521427905.

The product of its (nonzero) digits is 516096000, while the sum is 70.

The spelling of 538187042855806 in words is "five hundred thirty-eight trillion, one hundred eighty-seven billion, forty-two million, eight hundred fifty-five thousand, eight hundred six".