27256196464 has 160 divisors (see below), whose sum is σ = 65870069760. Its totient is φ = 10661932800.

The previous prime is 27256196449. The next prime is 27256196467. The reversal of 27256196464 is 46469165272.

It is a super-2 number, since 2×27256196464² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27256196467) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17348799 + ... + 17350369.

It is an arithmetic number, because the mean of its divisors is an integer number (411687936).

Almost surely, 2^27256196464 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 27256196464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32935034880).

27256196464 is an abundant number, since it is smaller than the sum of its proper divisors (38613873296).

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

27256196464 is a wasteful number, since it uses less digits than its factorization.

27256196464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1899 (or 1893 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 52.

The spelling of 27256196464 in words is "twenty-seven billion, two hundred fifty-six million, one hundred ninety-six thousand, four hundred sixty-four".