61051554073 has 4 divisors (see below), whose sum is σ = 61164404068. Its totient is φ = 60938704080.

The previous prime is 61051554049. The next prime is 61051554097. The reversal of 61051554073 is 37045515016.

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

It is an interprime number because it is at equal distance from previous prime (61051554049) and next prime (61051554097).

It can be written as a sum of positive squares in 2 ways, for example, as 14838163344 + 46213390729 = 121812^2 + 214973^2 .

It is a cyclic number.

It is not a de Polignac number, because 61051554073 - 2¹³ = 61051545881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61051554043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56424186 + ... + 56425267.

It is an arithmetic number, because the mean of its divisors is an integer number (15291101017).

Almost surely, 2^61051554073 is an apocalyptic number.

It is an amenable number.

61051554073 is a deficient number, since it is larger than the sum of its proper divisors (112849995).

61051554073 is a wasteful number, since it uses less digits than its factorization.

61051554073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112849994.

The product of its (nonzero) digits is 63000, while the sum is 37.

The spelling of 61051554073 in words is "sixty-one billion, fifty-one million, five hundred fifty-four thousand, seventy-three".