61815481324 has 24 divisors (see below), whose sum is σ = 108762600240. Its totient is φ = 30740527104.

The previous prime is 61815481307. The next prime is 61815481331. The reversal of 61815481324 is 42318451816.

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, 5431512 + ... + 5442880.

It is an arithmetic number, because the mean of its divisors is an integer number (4531775010).

Almost surely, 2^61815481324 is an apocalyptic number.

It is an amenable number.

61815481324 is a deficient number, since it is larger than the sum of its proper divisors (46947118916).

61815481324 is a wasteful number, since it uses less digits than its factorization.

61815481324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18609 (or 18607 counting only the distinct ones).

The product of its digits is 184320, while the sum is 43.

The spelling of 61815481324 in words is "sixty-one billion, eight hundred fifteen million, four hundred eighty-one thousand, three hundred twenty-four".