27924040641 has 16 divisors (see below), whose sum is σ = 42563575808. Its totient is φ = 15951848400.

The previous prime is 27924040607. The next prime is 27924040657. The reversal of 27924040641 is 14604042972.

It is not a de Polignac number, because 27924040641 - 2¹⁹ = 27923516353 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27924040641.

It is not an unprimeable number, because it can be changed into a prime (27924440641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124855 + ... + 267276.

It is an arithmetic number, because the mean of its divisors is an integer number (2660223488).

Almost surely, 2^27924040641 is an apocalyptic number.

27924040641 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

27924040641 is a deficient number, since it is larger than the sum of its proper divisors (14639535167).

27924040641 is a wasteful number, since it uses less digits than its factorization.

27924040641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395532.

The product of its (nonzero) digits is 96768, while the sum is 39.

The spelling of 27924040641 in words is "twenty-seven billion, nine hundred twenty-four million, forty thousand, six hundred forty-one".