27717245490 has 64 divisors (see below), whose sum is σ = 75723973632. Its totient is φ = 6427185600.

The previous prime is 27717245489. The next prime is 27717245527. The reversal of 27717245490 is 9454271772.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1818316 + ... + 1833495.

It is an arithmetic number, because the mean of its divisors is an integer number (1183187088).

Almost surely, 2^27717245490 is an apocalyptic number.

27717245490 is an abundant number, since it is smaller than the sum of its proper divisors (48006728142).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27717245490 is a wasteful number, since it uses less digits than its factorization.

27717245490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3651855.

The product of its (nonzero) digits is 987840, while the sum is 48.

It can be divided in two parts, 27717245 and 490, that added together give a triangular number (27717735 = T₇₄₄₅).

The spelling of 27717245490 in words is "twenty-seven billion, seven hundred seventeen million, two hundred forty-five thousand, four hundred ninety".