66838479522 has 32 divisors (see below), whose sum is σ = 141637636800. Its totient is φ = 20954515968.

The previous prime is 66838479517. The next prime is 66838479551. The reversal of 66838479522 is 22597483866.

66838479522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75747 + ... + 373382.

It is an arithmetic number, because the mean of its divisors is an integer number (4426176150).

Almost surely, 2^66838479522 is an apocalyptic number.

66838479522 is an abundant number, since it is smaller than the sum of its proper divisors (74799157278).

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

66838479522 is a wasteful number, since it uses less digits than its factorization.

66838479522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450610.

The product of its digits is 34836480, while the sum is 60.

The spelling of 66838479522 in words is "sixty-six billion, eight hundred thirty-eight million, four hundred seventy-nine thousand, five hundred twenty-two".