61056550155 has 8 divisors (see below), whose sum is σ = 97690480272. Its totient is φ = 32563493408.

The previous prime is 61056550151. The next prime is 61056550157. The reversal of 61056550155 is 55105565016.

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 61056550155 - 2² = 61056550151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61056550151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2035218324 + ... + 2035218353.

It is an arithmetic number, because the mean of its divisors is an integer number (12211310034).

Almost surely, 2^61056550155 is an apocalyptic number.

61056550155 is a deficient number, since it is larger than the sum of its proper divisors (36633930117).

61056550155 is a wasteful number, since it uses less digits than its factorization.

61056550155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4070436685.

The product of its (nonzero) digits is 112500, while the sum is 39.

The spelling of 61056550155 in words is "sixty-one billion, fifty-six million, five hundred fifty thousand, one hundred fifty-five".