27072328164 has 72 divisors (see below), whose sum is σ = 76689385920. Its totient is φ = 7279947264.

The previous prime is 27072328103. The next prime is 27072328177. The reversal of 27072328164 is 46182327072.

It is a happy number.

It is a super-2 number, since 2×27072328164² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 533319 + ... + 581870.

It is an arithmetic number, because the mean of its divisors is an integer number (1065130360).

Almost surely, 2^27072328164 is an apocalyptic number.

It is an amenable number.

27072328164 is an abundant number, since it is smaller than the sum of its proper divisors (49617057756).

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

27072328164 is a wasteful number, since it uses less digits than its factorization.

27072328164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115237 (or 1115218 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 42.

The spelling of 27072328164 in words is "twenty-seven billion, seventy-two million, three hundred twenty-eight thousand, one hundred sixty-four".