61973430056 has 64 divisors (see below), whose sum is σ = 119562670080. Its totient is φ = 30104141760.

The previous prime is 61973430049. The next prime is 61973430059. The reversal of 61973430056 is 65003437916.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 61973429989 and 61973430016.

It is not an unprimeable number, because it can be changed into a prime (61973430059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42129401 + ... + 42130871.

It is an arithmetic number, because the mean of its divisors is an integer number (1868166720).

Almost surely, 2^61973430056 is an apocalyptic number.

It is an amenable number.

61973430056 is a deficient number, since it is larger than the sum of its proper divisors (57589240024).

61973430056 is a wasteful number, since it uses less digits than its factorization.

61973430056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2574 (or 2570 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 44.

The spelling of 61973430056 in words is "sixty-one billion, nine hundred seventy-three million, four hundred thirty thousand, fifty-six".