61111105555556 has 96 divisors (see below), whose sum is σ = 132449976637440. Its totient is φ = 24103946490624.

The previous prime is 61111105555541. The next prime is 61111105555597. The reversal of 61111105555556 is 65555550111116.

It is a self number, because there is not a number n which added to its sum of digits gives 61111105555556.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14613401 + ... + 18324128.

It is an arithmetic number, because the mean of its divisors is an integer number (1379687256640).

Almost surely, 2^{61111105555556} is an apocalyptic number.

It is an amenable number.

61111105555556 is an abundant number, since it is smaller than the sum of its proper divisors (71338871081884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61111105555556 is a wasteful number, since it uses less digits than its factorization.

61111105555556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32937673 (or 32937671 counting only the distinct ones).

The product of its (nonzero) digits is 562500, while the sum is 47.

The spelling of 61111105555556 in words is "sixty-one trillion, one hundred eleven billion, one hundred five million, five hundred fifty-five thousand, five hundred fifty-six".