27915490477 has 8 divisors (see below), whose sum is σ = 31908523392. Its totient is φ = 23923734000.

The previous prime is 27915490429. The next prime is 27915490487. The reversal of 27915490477 is 77409451972.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27915490477 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 (27915490487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 271774 + ... + 360127.

It is an arithmetic number, because the mean of its divisors is an integer number (3988565424).

Almost surely, 2^27915490477 is an apocalyptic number.

It is an amenable number.

27915490477 is a deficient number, since it is larger than the sum of its proper divisors (3993032915).

27915490477 is an equidigital number, since it uses as much as digits as its factorization.

27915490477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638219.

The product of its (nonzero) digits is 4445280, while the sum is 55.

The spelling of 27915490477 in words is "twenty-seven billion, nine hundred fifteen million, four hundred ninety thousand, four hundred seventy-seven".