27485997611520 has 160 divisors (see below), whose sum is σ = 100422055755648. Its totient is φ = 6282513727488.

The previous prime is 27485997611491. The next prime is 27485997611539. The reversal of 27485997611520 is 2511679958472.

It is a tau number, because it is divible by the number of its divisors (160).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 255582379 + ... + 255689898.

Almost surely, 2^{27485997611520} is an apocalyptic number.

27485997611520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27485997611520 is an abundant number, since it is smaller than the sum of its proper divisors (72936058144128).

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

27485997611520 is an equidigital number, since it uses as much as digits as its factorization.

27485997611520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511272310 (or 511272294 counting only the distinct ones).

The product of its (nonzero) digits is 76204800, while the sum is 66.

The spelling of 27485997611520 in words is "twenty-seven trillion, four hundred eighty-five billion, nine hundred ninety-seven million, six hundred eleven thousand, five hundred twenty".