27857599945 has 16 divisors (see below), whose sum is σ = 38209385088. Its totient is φ = 19100016000.

The previous prime is 27857599927. The next prime is 27857599951. The reversal of 27857599945 is 54999575872.

It is not a de Polignac number, because 27857599945 - 2⁷ = 27857599817 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 270822 + ... + 359248.

It is an arithmetic number, because the mean of its divisors is an integer number (2388086568).

Almost surely, 2^27857599945 is an apocalyptic number.

It is an amenable number.

27857599945 is a deficient number, since it is larger than the sum of its proper divisors (10351785143).

27857599945 is an equidigital number, since it uses as much as digits as its factorization.

27857599945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97440.

The product of its digits is 285768000, while the sum is 70.

The spelling of 27857599945 in words is "twenty-seven billion, eight hundred fifty-seven million, five hundred ninety-nine thousand, nine hundred forty-five".