27515235440240 has 20 divisors (see below), whose sum is σ = 63972922398744. Its totient is φ = 11006094176064.

The previous prime is 27515235440239. The next prime is 27515235440339. The reversal of 27515235440240 is 4204453251572.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×27515235440240² (a number of 28 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 27515235440191 and 27515235440200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171970221422 + ... + 171970221581.

Almost surely, 2^{27515235440240} is an apocalyptic number.

27515235440240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27515235440240 is an abundant number, since it is smaller than the sum of its proper divisors (36457686958504).

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

27515235440240 is a wasteful number, since it uses less digits than its factorization.

27515235440240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343940443016 (or 343940443010 counting only the distinct ones).

The product of its (nonzero) digits is 1344000, while the sum is 44.

The spelling of 27515235440240 in words is "twenty-seven trillion, five hundred fifteen billion, two hundred thirty-five million, four hundred forty thousand, two hundred forty".