61052056069 has 4 divisors (see below), whose sum is σ = 61070565600. Its totient is φ = 61033546540.

The previous prime is 61052056067. The next prime is 61052056139. The reversal of 61052056069 is 96065025016.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61052056069 - 2¹ = 61052056067 is a prime.

It is a super-2 number, since 2×61052056069² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61052056063) 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, 9249817 + ... + 9256414.

It is an arithmetic number, because the mean of its divisors is an integer number (15267641400).

Almost surely, 2^61052056069 is an apocalyptic number.

It is an amenable number.

61052056069 is a deficient number, since it is larger than the sum of its proper divisors (18509531).

61052056069 is a wasteful number, since it uses less digits than its factorization.

61052056069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18509530.

The product of its (nonzero) digits is 97200, while the sum is 40.

The spelling of 61052056069 in words is "sixty-one billion, fifty-two million, fifty-six thousand, sixty-nine".