27287761458 has 24 divisors (see below), whose sum is σ = 55275172848. Its totient is φ = 8980769928.

The previous prime is 27287761421. The next prime is 27287761471. The reversal of 27287761458 is 85416778272.

It is a junction number, because it is equal to n+sod(n) for n = 27287761398 and 27287761407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 326916 + ... + 401807.

It is an arithmetic number, because the mean of its divisors is an integer number (2303132202).

Almost surely, 2^27287761458 is an apocalyptic number.

27287761458 is an abundant number, since it is smaller than the sum of its proper divisors (27987411390).

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

27287761458 is an equidigital number, since it uses as much as digits as its factorization.

27287761458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728886 (or 728807 counting only the distinct ones).

The product of its digits is 10536960, while the sum is 57.

The spelling of 27287761458 in words is "twenty-seven billion, two hundred eighty-seven million, seven hundred sixty-one thousand, four hundred fifty-eight".