122736263260 has 144 divisors (see below), whose sum is σ = 288273769056. Its totient is φ = 43633787904.

The previous prime is 122736263257. The next prime is 122736263261. The reversal of 122736263260 is 62362637221.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122736263261) 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 47 ways as a sum of consecutive naturals, for example, 123105082 + ... + 123106078.

It is an arithmetic number, because the mean of its divisors is an integer number (2001901174).

Almost surely, 2^122736263260 is an apocalyptic number.

122736263260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122736263260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144136884528).

122736263260 is an abundant number, since it is smaller than the sum of its proper divisors (165537505796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122736263260 is a wasteful number, since it uses less digits than its factorization.

122736263260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640 (or 1609 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 40.

The spelling of 122736263260 in words is "one hundred twenty-two billion, seven hundred thirty-six million, two hundred sixty-three thousand, two hundred sixty".