61111005055 has 8 divisors (see below), whose sum is σ = 74535390144. Its totient is φ = 48087348000.

The previous prime is 61111005041. The next prime is 61111005089. The reversal of 61111005055 is 55050011116.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61111005055 - 2¹¹ = 61111003007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100181671 + ... + 100182280.

It is an arithmetic number, because the mean of its divisors is an integer number (9316923768).

Almost surely, 2^61111005055 is an apocalyptic number.

61111005055 is a deficient number, since it is larger than the sum of its proper divisors (13424385089).

61111005055 is a wasteful number, since it uses less digits than its factorization.

61111005055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200364017.

The product of its (nonzero) digits is 750, while the sum is 25.

The spelling of 61111005055 in words is "sixty-one billion, one hundred eleven million, five thousand, fifty-five".