61101005555 has 16 divisors (see below), whose sum is σ = 73674384960. Its totient is φ = 48645919872.

The previous prime is 61101005521. The next prime is 61101005593. The reversal of 61101005555 is 55550010116.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61101005555 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 836357 + ... + 906473.

It is an arithmetic number, because the mean of its divisors is an integer number (4604649060).

Almost surely, 2^61101005555 is an apocalyptic number.

61101005555 is a deficient number, since it is larger than the sum of its proper divisors (12573379405).

61101005555 is a wasteful number, since it uses less digits than its factorization.

61101005555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70958.

The product of its (nonzero) digits is 3750, while the sum is 29.

The spelling of 61101005555 in words is "sixty-one billion, one hundred one million, five thousand, five hundred fifty-five".