61516352756 has 24 divisors (see below), whose sum is σ = 111227311104. Its totient is φ = 29738924640.

The previous prime is 61516352741. The next prime is 61516352789. The reversal of 61516352756 is 65725361516.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 61516352756.

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, 88115 + ... + 361658.

It is an arithmetic number, because the mean of its divisors is an integer number (4634471296).

Almost surely, 2^61516352756 is an apocalyptic number.

It is an amenable number.

61516352756 is a deficient number, since it is larger than the sum of its proper divisors (49710958348).

61516352756 is a wasteful number, since it uses less digits than its factorization.

61516352756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450911 (or 450909 counting only the distinct ones).

The product of its digits is 1134000, while the sum is 47.

The spelling of 61516352756 in words is "sixty-one billion, five hundred sixteen million, three hundred fifty-two thousand, seven hundred fifty-six".