27145744537764 has 24 divisors (see below), whose sum is σ = 63368360097280. Its totient is φ = 9044540154144.

The previous prime is 27145744537741. The next prime is 27145744537781. The reversal of 27145744537764 is 46773544754172.

It is a junction number, because it is equal to n+sod(n) for n = 27145744537695 and 27145744537704.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 505141819 + ... + 505195554.

Almost surely, 2^{27145744537764} is an apocalyptic number.

It is an amenable number.

27145744537764 is an abundant number, since it is smaller than the sum of its proper divisors (36222615559516).

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

27145744537764 is a wasteful number, since it uses less digits than its factorization.

27145744537764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010339619 (or 1010339617 counting only the distinct ones).

The product of its digits is 553190400, while the sum is 66.

The spelling of 27145744537764 in words is "twenty-seven trillion, one hundred forty-five billion, seven hundred forty-four million, five hundred thirty-seven thousand, seven hundred sixty-four".