27421041649 has 9 divisors (see below), whose sum is σ = 28080862329. Its totient is φ = 26776388100.

The previous prime is 27421041631. The next prime is 27421041679. The reversal of 27421041649 is 94614012472.

The square root of 27421041649 is 165593.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 27421041649 - 2⁵ = 27421041617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27421041679) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 7118574 + ... + 7122424.

Almost surely, 2^27421041649 is an apocalyptic number.

27421041649 is the 165593-rd square number.

27421041649 is the 82797-th centered octagonal number.

It is an amenable number.

27421041649 is a deficient number, since it is larger than the sum of its proper divisors (659820680).

27421041649 is an frugal number, since it uses more digits than its factorization.

27421041649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7788 (or 3894 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 27421041649 in words is "twenty-seven billion, four hundred twenty-one million, forty-one thousand, six hundred forty-nine".