27521148642 has 32 divisors (see below), whose sum is σ = 59384778432. Its totient is φ = 8452551744.

The previous prime is 27521148637. The next prime is 27521148667. The reversal of 27521148642 is 24684112572.

It is a junction number, because it is equal to n+sod(n) for n = 27521148594 and 27521148603.

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 15 ways as a sum of consecutive naturals, for example, 279853 + ... + 365184.

It is an arithmetic number, because the mean of its divisors is an integer number (1855774326).

Almost surely, 2^27521148642 is an apocalyptic number.

27521148642 is an abundant number, since it is smaller than the sum of its proper divisors (31863629790).

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

27521148642 is a wasteful number, since it uses less digits than its factorization.

27521148642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645602.

The product of its digits is 215040, while the sum is 42.

The spelling of 27521148642 in words is "twenty-seven billion, five hundred twenty-one million, one hundred forty-eight thousand, six hundred forty-two".