271491382864 has 320 divisors, whose sum is σ = 628279787520. Its totient is φ = 112606433280.

The previous prime is 271491382853. The next prime is 271491382871. The reversal of 271491382864 is 468283194172.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 884336599 + ... + 884336905.

It is an arithmetic number, because the mean of its divisors is an integer number (1963374336).

Almost surely, 2^271491382864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 271491382864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (314139893760).

271491382864 is an abundant number, since it is smaller than the sum of its proper divisors (356788404656).

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

271491382864 is a wasteful number, since it uses less digits than its factorization.

271491382864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538 (or 532 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 55.

The spelling of 271491382864 in words is "two hundred seventy-one billion, four hundred ninety-one million, three hundred eighty-two thousand, eight hundred sixty-four".