61651116205574 has 16 divisors (see below), whose sum is σ = 105687756304416. Its totient is φ = 26421874814400.

The previous prime is 61651116205571. The next prime is 61651116205583. The reversal of 61651116205574 is 47550261115616.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61651116205571) by changing a digit.

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, 12032984 + ... + 16373604.

It is an arithmetic number, because the mean of its divisors is an integer number (6605484769026).

Almost surely, 2^{61651116205574} is an apocalyptic number.

61651116205574 is a deficient number, since it is larger than the sum of its proper divisors (44036640098842).

61651116205574 is a wasteful number, since it uses less digits than its factorization.

61651116205574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5355151.

The product of its (nonzero) digits is 1512000, while the sum is 50.

The spelling of 61651116205574 in words is "sixty-one trillion, six hundred fifty-one billion, one hundred sixteen million, two hundred five thousand, five hundred seventy-four".