122723747536 has 40 divisors (see below), whose sum is σ = 256485814760. Its totient is φ = 56549270016.

The previous prime is 122723747521. The next prime is 122723747537. The reversal of 122723747536 is 635747327221.

It can be written as a sum of positive squares in 4 ways, for example, as 699285136 + 122024462400 = 26444^2 + 349320^2 .

It is a super-2 number, since 2×122723747536² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 122723747536.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122723747537) 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 7 ways as a sum of consecutive naturals, for example, 353751 + ... + 608758.

It is an arithmetic number, because the mean of its divisors is an integer number (6412145369).

Almost surely, 2^122723747536 is an apocalyptic number.

122723747536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

122723747536 is an abundant number, since it is smaller than the sum of its proper divisors (133762067224).

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

122723747536 is a wasteful number, since it uses less digits than its factorization.

122723747536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963143 (or 963137 counting only the distinct ones).

The product of its digits is 2963520, while the sum is 49.

The spelling of 122723747536 in words is "one hundred twenty-two billion, seven hundred twenty-three million, seven hundred forty-seven thousand, five hundred thirty-six".