61604583550 has 24 divisors (see below), whose sum is σ = 114592065192. Its totient is φ = 24640212000.

The previous prime is 61604583461. The next prime is 61604583563. The reversal of 61604583550 is 5538540616.

It is a junction number, because it is equal to n+sod(n) for n = 61604583497 and 61604583506.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 982645 + ... + 1043455.

It is an arithmetic number, because the mean of its divisors is an integer number (4774669383).

Almost surely, 2^61604583550 is an apocalyptic number.

61604583550 is a deficient number, since it is larger than the sum of its proper divisors (52987481642).

61604583550 is a wasteful number, since it uses less digits than its factorization.

61604583550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81084 (or 81079 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 43.

The spelling of 61604583550 in words is "sixty-one billion, six hundred four million, five hundred eighty-three thousand, five hundred fifty".