27378261464 has 16 divisors (see below), whose sum is σ = 51364587120. Its totient is φ = 13681038240.

The previous prime is 27378261437. The next prime is 27378261487. The reversal of 27378261464 is 46416287372.

It is a super-2 number, since 2×27378261464² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 997172 + ... + 1024259.

It is an arithmetic number, because the mean of its divisors is an integer number (3210286695).

Almost surely, 2^27378261464 is an apocalyptic number.

It is an amenable number.

27378261464 is a deficient number, since it is larger than the sum of its proper divisors (23986325656).

27378261464 is a wasteful number, since it uses less digits than its factorization.

27378261464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2023130 (or 2023126 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 50.

The spelling of 27378261464 in words is "twenty-seven billion, three hundred seventy-eight million, two hundred sixty-one thousand, four hundred sixty-four".