538158105861 has 8 divisors (see below), whose sum is σ = 724127115360. Its totient is φ = 355480583472.

The previous prime is 538158105833. The next prime is 538158105871. The reversal of 538158105861 is 168501851835.

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

It is not a de Polignac number, because 538158105861 - 2¹⁰ = 538158104837 is a prime.

It is a super-2 number, since 2×538158105861² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538158105871) 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, 822871395 + ... + 822872048.

It is an arithmetic number, because the mean of its divisors is an integer number (90515889420).

Almost surely, 2^538158105861 is an apocalyptic number.

It is an amenable number.

538158105861 is a deficient number, since it is larger than the sum of its proper divisors (185969009499).

538158105861 is a wasteful number, since it uses less digits than its factorization.

538158105861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1645743555.

The product of its (nonzero) digits is 1152000, while the sum is 51.

The spelling of 538158105861 in words is "five hundred thirty-eight billion, one hundred fifty-eight million, one hundred five thousand, eight hundred sixty-one".