27913189542 has 64 divisors (see below), whose sum is σ = 67601931264. Its totient is φ = 7500810240.

The previous prime is 27913189519. The next prime is 27913189561. The reversal of 27913189542 is 24598131972.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1065918 + ... + 1091790.

It is an arithmetic number, because the mean of its divisors is an integer number (1056280176).

Almost surely, 2^27913189542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27913189542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33800965632).

27913189542 is an abundant number, since it is smaller than the sum of its proper divisors (39688741722).

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

27913189542 is a wasteful number, since it uses less digits than its factorization.

27913189542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27413.

The product of its digits is 1088640, while the sum is 51.

The spelling of 27913189542 in words is "twenty-seven billion, nine hundred thirteen million, one hundred eighty-nine thousand, five hundred forty-two".