27215697630 has 128 divisors (see below), whose sum is σ = 77881430016. Its totient is φ = 6009292800.

The previous prime is 27215697617. The next prime is 27215697697. The reversal of 27215697630 is 3679651272.

It is a self number, because there is not a number n which added to its sum of digits gives 27215697630.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 95664 + ... + 252156.

It is an arithmetic number, because the mean of its divisors is an integer number (608448672).

Almost surely, 2^27215697630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27215697630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38940715008).

27215697630 is an abundant number, since it is smaller than the sum of its proper divisors (50665732386).

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

27215697630 is a wasteful number, since it uses less digits than its factorization.

27215697630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156562.

The product of its (nonzero) digits is 952560, while the sum is 48.

The spelling of 27215697630 in words is "twenty-seven billion, two hundred fifteen million, six hundred ninety-seven thousand, six hundred thirty".