61305897574 has 16 divisors (see below), whose sum is σ = 92346991200. Its totient is φ = 30523711680.

The previous prime is 61305897557. The next prime is 61305897613. The reversal of 61305897574 is 47579850316.

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 7 ways as a sum of consecutive naturals, for example, 835327 + ... + 905749.

It is an arithmetic number, because the mean of its divisors is an integer number (5771686950).

Almost surely, 2^61305897574 is an apocalyptic number.

61305897574 is a deficient number, since it is larger than the sum of its proper divisors (31041093626).

61305897574 is a wasteful number, since it uses less digits than its factorization.

61305897574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72255.

The product of its (nonzero) digits is 6350400, while the sum is 55.

The spelling of 61305897574 in words is "sixty-one billion, three hundred five million, eight hundred ninety-seven thousand, five hundred seventy-four".