27219381391906 has 32 divisors (see below), whose sum is σ = 46216205546112. Its totient is φ = 11913951951360.

The previous prime is 27219381391871. The next prime is 27219381391919. The reversal of 27219381391906 is 60919318391272.

It is a super-2 number, since 2×27219381391906² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172287246 + ... + 172445161.

It is an arithmetic number, because the mean of its divisors is an integer number (1444256423316).

Almost surely, 2^{27219381391906} is an apocalyptic number.

27219381391906 is a deficient number, since it is larger than the sum of its proper divisors (18996824154206).

27219381391906 is a wasteful number, since it uses less digits than its factorization.

27219381391906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344732554.

The product of its (nonzero) digits is 8817984, while the sum is 61.

The spelling of 27219381391906 in words is "twenty-seven trillion, two hundred nineteen billion, three hundred eighty-one million, three hundred ninety-one thousand, nine hundred six".