61989783575 has 6 divisors (see below), whose sum is σ = 76867331664. Its totient is φ = 49591826840.

The previous prime is 61989783503. The next prime is 61989783601. The reversal of 61989783575 is 57538798916.

It is not a de Polignac number, because 61989783575 - 2¹⁸ = 61989521431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1239795647 + ... + 1239795696.

It is an arithmetic number, because the mean of its divisors is an integer number (12811221944).

Almost surely, 2^61989783575 is an apocalyptic number.

61989783575 is a deficient number, since it is larger than the sum of its proper divisors (14877548089).

61989783575 is a wasteful number, since it uses less digits than its factorization.

61989783575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2479591353 (or 2479591348 counting only the distinct ones).

The product of its digits is 114307200, while the sum is 68.

The spelling of 61989783575 in words is "sixty-one billion, nine hundred eighty-nine million, seven hundred eighty-three thousand, five hundred seventy-five".