61310553667 has 16 divisors (see below), whose sum is σ = 71060623200.
Its totient is φ = 52360439040.
The previous prime is 61310553641. The next prime is 61310553679. The reversal of 61310553667 is 76635501316.
It is a cyclic number.
It is not a de Polignac number, because 61310553667 - 27 = 61310553539 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (61310556667) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2585442 + ... + 2609047.
It is an arithmetic number, because the mean of its divisors is an integer number (4441288950).
Almost surely, 261310553667 is an apocalyptic number.
61310553667 is a deficient number, since it is larger than the sum of its proper divisors (9750069533).
61310553667 is a wasteful number, since it uses less digits than its factorization.
61310553667 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5194566.
The product of its (nonzero) digits is 340200, while the sum is 43.
The spelling of 61310553667 in words is "sixty-one billion, three hundred ten million, five hundred fifty-three thousand, six hundred sixty-seven".