61001111055 has 8 divisors (see below), whose sum is σ = 97601777712. Its totient is φ = 32533925888.

The previous prime is 61001111021. The next prime is 61001111099. The reversal of 61001111055 is 55011110016.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 61001111055 - 2¹⁵ = 61001078287 is a prime.

It is a super-2 number, since 2×61001111055² (a number of 22 digits) contains 22 as substring.

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, 2033370354 + ... + 2033370383.

It is an arithmetic number, because the mean of its divisors is an integer number (12200222214).

Almost surely, 2^61001111055 is an apocalyptic number.

61001111055 is a deficient number, since it is larger than the sum of its proper divisors (36600666657).

61001111055 is a wasteful number, since it uses less digits than its factorization.

61001111055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4066740745.

The product of its (nonzero) digits is 150, while the sum is 21.

The spelling of 61001111055 in words is "sixty-one billion, one million, one hundred eleven thousand, fifty-five".