27438607997 has 8 divisors (see below), whose sum is σ = 29814447360. Its totient is φ = 25155938880.

The previous prime is 27438607979. The next prime is 27438608053. The reversal of 27438607997 is 79970683472.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27438607997 - 2¹⁰ = 27438606973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27438607397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23291948 + ... + 23293125.

It is an arithmetic number, because the mean of its divisors is an integer number (3726805920).

Almost surely, 2^27438607997 is an apocalyptic number.

It is an amenable number.

27438607997 is a deficient number, since it is larger than the sum of its proper divisors (2375839363).

27438607997 is a wasteful number, since it uses less digits than its factorization.

27438607997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46585123.

The product of its (nonzero) digits is 32006016, while the sum is 62.

The spelling of 27438607997 in words is "twenty-seven billion, four hundred thirty-eight million, six hundred seven thousand, nine hundred ninety-seven".