61051005055 has 4 divisors (see below), whose sum is σ = 73261206072. Its totient is φ = 48840804040.

The previous prime is 61051005011. The next prime is 61051005079. The reversal of 61051005055 is 55050015016.

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

It is not a de Polignac number, because 61051005055 - 2⁹ = 61051004543 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 3 ways as a sum of consecutive naturals, for example, 6105100501 + ... + 6105100510.

It is an arithmetic number, because the mean of its divisors is an integer number (18315301518).

Almost surely, 2^61051005055 is an apocalyptic number.

61051005055 is a deficient number, since it is larger than the sum of its proper divisors (12210201017).

61051005055 is a wasteful number, since it uses less digits than its factorization.

61051005055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12210201016.

The product of its (nonzero) digits is 3750, while the sum is 28.

The spelling of 61051005055 in words is "sixty-one billion, fifty-one million, five thousand, fifty-five".