27207215712 has 120 divisors (see below), whose sum is σ = 80101142352. Its totient is φ = 9059385600.

The previous prime is 27207215677. The next prime is 27207215713. The reversal of 27207215712 is 21751270272.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27207215713) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2667262 + ... + 2677442.

Almost surely, 2^27207215712 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 27207215712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40050571176).

27207215712 is an abundant number, since it is smaller than the sum of its proper divisors (52893926640).

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

27207215712 is a wasteful number, since it uses less digits than its factorization.

27207215712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11234 (or 11217 counting only the distinct ones).

The product of its (nonzero) digits is 27440, while the sum is 36.

Adding to 27207215712 its reverse (21751270272), we get a palindrome (48958485984).

The spelling of 27207215712 in words is "twenty-seven billion, two hundred seven million, two hundred fifteen thousand, seven hundred twelve".