122477739156 has 72 divisors (see below), whose sum is σ = 315338587200. Its totient is φ = 40070891520.

The previous prime is 122477739151. The next prime is 122477739233. The reversal of 122477739156 is 651937774221.

122477739156 is a `hidden beast` number, since 1 + 2 + 247 + 7 + 7 + 391 + 5 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122477739151) 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 23 ways as a sum of consecutive naturals, for example, 1316505 + ... + 1406463.

It is an arithmetic number, because the mean of its divisors is an integer number (4379702600).

Almost surely, 2^122477739156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122477739156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157669293600).

122477739156 is an abundant number, since it is smaller than the sum of its proper divisors (192860848044).

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

122477739156 is a wasteful number, since it uses less digits than its factorization.

122477739156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90669 (or 90664 counting only the distinct ones).

The product of its digits is 4445280, while the sum is 54.

The spelling of 122477739156 in words is "one hundred twenty-two billion, four hundred seventy-seven million, seven hundred thirty-nine thousand, one hundred fifty-six".