61080870911 has 4 divisors (see below), whose sum is σ = 61221935712. Its totient is φ = 60939806112.

The previous prime is 61080870887. The next prime is 61080871067. The reversal of 61080870911 is 11907808016.

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 61080870911 - 2²² = 61076676607 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 (61080870211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70531751 + ... + 70532616.

It is an arithmetic number, because the mean of its divisors is an integer number (15305483928).

Almost surely, 2^61080870911 is an apocalyptic number.

61080870911 is a deficient number, since it is larger than the sum of its proper divisors (141064801).

61080870911 is a wasteful number, since it uses less digits than its factorization.

61080870911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141064800.

The product of its (nonzero) digits is 24192, while the sum is 41.

The spelling of 61080870911 in words is "sixty-one billion, eighty million, eight hundred seventy thousand, nine hundred eleven".