122774755990 has 64 divisors (see below), whose sum is σ = 238542843456. Its totient is φ = 45323579392.

The previous prime is 122774755967. The next prime is 122774755991. The reversal of 122774755990 is 99557477221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122774755991) 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 31 ways as a sum of consecutive naturals, for example, 25613034 + ... + 25617826.

It is an arithmetic number, because the mean of its divisors is an integer number (3727231929).

Almost surely, 2^122774755990 is an apocalyptic number.

122774755990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122774755990 is a deficient number, since it is larger than the sum of its proper divisors (115768087466).

122774755990 is a wasteful number, since it uses less digits than its factorization.

122774755990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7713.

The product of its (nonzero) digits is 11113200, while the sum is 58.

The spelling of 122774755990 in words is "one hundred twenty-two billion, seven hundred seventy-four million, seven hundred fifty-five thousand, nine hundred ninety".