27377047421 has 4 divisors (see below), whose sum is σ = 27529992000. Its totient is φ = 27224102844.

The previous prime is 27377047409. The next prime is 27377047429. The reversal of 27377047421 is 12474077372.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27377047421 - 2¹⁸ = 27376785277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27377047429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76472021 + ... + 76472378.

It is an arithmetic number, because the mean of its divisors is an integer number (6882498000).

Almost surely, 2^27377047421 is an apocalyptic number.

It is an amenable number.

27377047421 is a deficient number, since it is larger than the sum of its proper divisors (152944579).

27377047421 is a wasteful number, since it uses less digits than its factorization.

27377047421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152944578.

The product of its (nonzero) digits is 460992, while the sum is 44.

The spelling of 27377047421 in words is "twenty-seven billion, three hundred seventy-seven million, forty-seven thousand, four hundred twenty-one".