122445555781 has 8 divisors (see below), whose sum is σ = 123534512640. Its totient is φ = 121359571392.

The previous prime is 122445555779. The next prime is 122445555833. The reversal of 122445555781 is 187555544221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122445555781 - 2¹ = 122445555779 is a prime.

It is a super-3 number, since 3×122445555781³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122445555751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 660325 + ... + 825178.

It is an arithmetic number, because the mean of its divisors is an integer number (15441814080).

Almost surely, 2^122445555781 is an apocalyptic number.

It is an amenable number.

122445555781 is a deficient number, since it is larger than the sum of its proper divisors (1088956859).

122445555781 is a wasteful number, since it uses less digits than its factorization.

122445555781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1486235.

The product of its digits is 2240000, while the sum is 49.

The spelling of 122445555781 in words is "one hundred twenty-two billion, four hundred forty-five million, five hundred fifty-five thousand, seven hundred eighty-one".