27187358940 has 144 divisors (see below), whose sum is σ = 98392442400. Its totient is φ = 6214247424.

The previous prime is 27187358929. The next prime is 27187358941. The reversal of 27187358940 is 4985378172.

It is a happy number.

27187358940 is a `hidden beast` number, since 2 + 7 + 18 + 7 + 3 + 589 + 40 = 666.

It is a super-2 number, since 2×27187358940² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27187358941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 487285 + ... + 540204.

It is an arithmetic number, because the mean of its divisors is an integer number (683280850).

Almost surely, 2^27187358940 is an apocalyptic number.

27187358940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27187358940 is an abundant number, since it is smaller than the sum of its proper divisors (71205083460).

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

27187358940 is a wasteful number, since it uses less digits than its factorization.

27187358940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1027521 (or 1027506 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 54.

The spelling of 27187358940 in words is "twenty-seven billion, one hundred eighty-seven million, three hundred fifty-eight thousand, nine hundred forty".