27158542731620 has 24 divisors (see below), whose sum is σ = 57814212886584. Its totient is φ = 10714603159296.

The previous prime is 27158542731599. The next prime is 27158542731637. The reversal of 27158542731620 is 2613724585172.

It can be written as a sum of positive squares in 4 ways, for example, as 3855505039936 + 23303037691684 = 1963544^2 + 4827322^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9300869339 + ... + 9300872258.

It is an arithmetic number, because the mean of its divisors is an integer number (2408925536941).

Almost surely, 2^{27158542731620} is an apocalyptic number.

27158542731620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27158542731620 is an abundant number, since it is smaller than the sum of its proper divisors (30655670154964).

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

27158542731620 is a wasteful number, since it uses less digits than its factorization.

27158542731620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18601741679 (or 18601741677 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 53.

The spelling of 27158542731620 in words is "twenty-seven trillion, one hundred fifty-eight billion, five hundred forty-two million, seven hundred thirty-one thousand, six hundred twenty".