27500165641560 has 128 divisors (see below), whose sum is σ = 86106872033280. Its totient is φ = 7012954510848.

The previous prime is 27500165641519. The next prime is 27500165641577. The reversal of 27500165641560 is 6514656100572.

It is a super-2 number, since 2×27500165641560² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

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, 11153434 + ... + 13394006.

It is an arithmetic number, because the mean of its divisors is an integer number (672709937760).

Almost surely, 2^{27500165641560} is an apocalyptic number.

27500165641560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27500165641560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43053436016640).

27500165641560 is an abundant number, since it is smaller than the sum of its proper divisors (58606706391720).

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

27500165641560 is a wasteful number, since it uses less digits than its factorization.

27500165641560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2245057 (or 2245053 counting only the distinct ones).

The product of its (nonzero) digits is 1512000, while the sum is 48.

The spelling of 27500165641560 in words is "twenty-seven trillion, five hundred billion, one hundred sixty-five million, six hundred forty-one thousand, five hundred sixty".