61055055103 has 4 divisors (see below), whose sum is σ = 69777205840. Its totient is φ = 52332904368.

The previous prime is 61055055097. The next prime is 61055055163. The reversal of 61055055103 is 30155055016.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61055055103 - 2³³ = 52465120511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61055055163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4361075358 + ... + 4361075371.

It is an arithmetic number, because the mean of its divisors is an integer number (17444301460).

Almost surely, 2^61055055103 is an apocalyptic number.

61055055103 is a deficient number, since it is larger than the sum of its proper divisors (8722150737).

61055055103 is an equidigital number, since it uses as much as digits as its factorization.

61055055103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8722150736.

The product of its (nonzero) digits is 11250, while the sum is 31.

The spelling of 61055055103 in words is "sixty-one billion, fifty-five million, fifty-five thousand, one hundred three".