122621463640 has 64 divisors (see below), whose sum is σ = 297160516800. Its totient is φ = 45269632512.

The previous prime is 122621463631. The next prime is 122621463661. The reversal of 122621463640 is 46364126221.

122621463640 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 122621463640.

It is a congruent number.

It is an unprimeable number.

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, 6708754 + ... + 6727006.

It is an arithmetic number, because the mean of its divisors is an integer number (4643133075).

Almost surely, 2^122621463640 is an apocalyptic number.

122621463640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122621463640 is an abundant number, since it is smaller than the sum of its proper divisors (174539053160).

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

122621463640 is a wasteful number, since it uses less digits than its factorization.

122621463640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31196 (or 31192 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 37.

Adding to 122621463640 its reverse (46364126221), we get a palindrome (168985589861).

The spelling of 122621463640 in words is "one hundred twenty-two billion, six hundred twenty-one million, four hundred sixty-three thousand, six hundred forty".