27001500012 has 72 divisors (see below), whose sum is σ = 70898742096. Its totient is φ = 8985619008.

The previous prime is 27001499977. The next prime is 27001500041. The reversal of 27001500012 is 21000510072.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 573178 + ... + 618494.

Almost surely, 2^27001500012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27001500012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35449371048).

27001500012 is an abundant number, since it is smaller than the sum of its proper divisors (43897242084).

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

27001500012 is a wasteful number, since it uses less digits than its factorization.

27001500012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45949 (or 45935 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The spelling of 27001500012 in words is "twenty-seven billion, one million, five hundred thousand, twelve".