27380767821 has 8 divisors (see below), whose sum is σ = 39826571424. Its totient is φ = 16594404720.

The previous prime is 27380767781. The next prime is 27380767831. The reversal of 27380767821 is 12876708372.

It is a happy number.

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

It is not a de Polignac number, because 27380767821 - 2¹³ = 27380759629 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27380767831) 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, 414860086 + ... + 414860151.

It is an arithmetic number, because the mean of its divisors is an integer number (4978321428).

Almost surely, 2^27380767821 is an apocalyptic number.

It is an amenable number.

27380767821 is a deficient number, since it is larger than the sum of its proper divisors (12445803603).

27380767821 is a wasteful number, since it uses less digits than its factorization.

27380767821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829720251.

The product of its (nonzero) digits is 1580544, while the sum is 51.

The spelling of 27380767821 in words is "twenty-seven billion, three hundred eighty million, seven hundred sixty-seven thousand, eight hundred twenty-one".