27260247642 has 16 divisors (see below), whose sum is σ = 55060303392. Its totient is φ = 8996781200.

The previous prime is 27260247617. The next prime is 27260247647. The reversal of 27260247642 is 24674206272.

It is a super-2 number, since 2×27260247642² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27260247594 and 27260247603.

It is not an unprimeable number, because it can be changed into a prime (27260247647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22491348 + ... + 22492559.

It is an arithmetic number, because the mean of its divisors is an integer number (3441268962).

Almost surely, 2^27260247642 is an apocalyptic number.

27260247642 is an abundant number, since it is smaller than the sum of its proper divisors (27800055750).

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

27260247642 is a wasteful number, since it uses less digits than its factorization.

27260247642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44984013.

The product of its (nonzero) digits is 451584, while the sum is 42.

The spelling of 27260247642 in words is "twenty-seven billion, two hundred sixty million, two hundred forty-seven thousand, six hundred forty-two".