61155100556 has 24 divisors (see below), whose sum is σ = 116759667024. Its totient is φ = 27795625280.

The previous prime is 61155100541. The next prime is 61155100577. The reversal of 61155100556 is 65500155116.

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, 616166 + ... + 708498.

It is an arithmetic number, because the mean of its divisors is an integer number (4864986126).

Almost surely, 2^61155100556 is an apocalyptic number.

It is an amenable number.

61155100556 is a deficient number, since it is larger than the sum of its proper divisors (55604566468).

61155100556 is a wasteful number, since it uses less digits than its factorization.

61155100556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107401 (or 107399 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 35.

The spelling of 61155100556 in words is "sixty-one billion, one hundred fifty-five million, one hundred thousand, five hundred fifty-six".