61611264556 has 12 divisors (see below), whose sum is σ = 111537634320. Its totient is φ = 29743369040.

The previous prime is 61611264541. The next prime is 61611264647. The reversal of 61611264556 is 65546211616.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265565680 + ... + 265565911.

It is an arithmetic number, because the mean of its divisors is an integer number (9294802860).

Almost surely, 2^61611264556 is an apocalyptic number.

It is an amenable number.

61611264556 is a deficient number, since it is larger than the sum of its proper divisors (49926369764).

61611264556 is a wasteful number, since it uses less digits than its factorization.

61611264556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531131624 (or 531131622 counting only the distinct ones).

The product of its digits is 259200, while the sum is 43.

The spelling of 61611264556 in words is "sixty-one billion, six hundred eleven million, two hundred sixty-four thousand, five hundred fifty-six".