27156927420 has 288 divisors, whose sum is σ = 95703648768. Its totient is φ = 6105355776.

The previous prime is 27156927361. The next prime is 27156927433. The reversal of 27156927420 is 2472965172.

27156927420 is a `hidden beast` number, since 27 + 1 + 569 + 27 + 42 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 21166099 + ... + 21167381.

It is an arithmetic number, because the mean of its divisors is an integer number (332304336).

Almost surely, 2^27156927420 is an apocalyptic number.

27156927420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27156927420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47851824384).

27156927420 is an abundant number, since it is smaller than the sum of its proper divisors (68546721348).

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

27156927420 is a wasteful number, since it uses less digits than its factorization.

27156927420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1569 (or 1564 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The spelling of 27156927420 in words is "twenty-seven billion, one hundred fifty-six million, nine hundred twenty-seven thousand, four hundred twenty".