27499050621 has 24 divisors (see below), whose sum is σ = 48065569344. Its totient is φ = 14789404800.

The previous prime is 27499050613. The next prime is 27499050641. The reversal of 27499050621 is 12605099472.

It is not a de Polignac number, because 27499050621 - 2³ = 27499050613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27499050641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12836955 + ... + 12839096.

It is an arithmetic number, because the mean of its divisors is an integer number (2002732056).

Almost surely, 2^27499050621 is an apocalyptic number.

27499050621 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

27499050621 is a deficient number, since it is larger than the sum of its proper divisors (20566518723).

27499050621 is a wasteful number, since it uses less digits than its factorization.

27499050621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25676081 (or 25676078 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 27499050621 in words is "twenty-seven billion, four hundred ninety-nine million, fifty thousand, six hundred twenty-one".