61572685448 has 16 divisors (see below), whose sum is σ = 115544930460. Its totient is φ = 30760704000.

The previous prime is 61572685411. The next prime is 61572685481. The reversal of 61572685448 is 84458627516.

It can be written as a sum of positive squares in 2 ways, for example, as 61227543364 + 345142084 = 247442^2 + 18578^2 .

It is a junction number, because it is equal to n+sod(n) for n = 61572685393 and 61572685402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3194633 + ... + 3213848.

Almost surely, 2^61572685448 is an apocalyptic number.

It is an amenable number.

61572685448 is a deficient number, since it is larger than the sum of its proper divisors (53972245012).

61572685448 is a wasteful number, since it uses less digits than its factorization.

61572685448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6409688 (or 6409684 counting only the distinct ones).

The product of its digits is 12902400, while the sum is 56.

The spelling of 61572685448 in words is "sixty-one billion, five hundred seventy-two million, six hundred eighty-five thousand, four hundred forty-eight".