122991149745 has 48 divisors (see below), whose sum is σ = 214209515520. Its totient is φ = 65280417792.

The previous prime is 122991149717. The next prime is 122991149779. The reversal of 122991149745 is 547941199221.

122991149745 is a `hidden beast` number, since 1 + 2 + 29 + 91 + 1 + 497 + 45 = 666.

It is not a de Polignac number, because 122991149745 - 2⁵ = 122991149713 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122991149691 and 122991149700.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14556112 + ... + 14564558.

It is an arithmetic number, because the mean of its divisors is an integer number (4462698240).

Almost surely, 2^122991149745 is an apocalyptic number.

122991149745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122991149745 is a deficient number, since it is larger than the sum of its proper divisors (91218365775).

122991149745 is a wasteful number, since it uses less digits than its factorization.

122991149745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9974 (or 9971 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 54.

The spelling of 122991149745 in words is "one hundred twenty-two billion, nine hundred ninety-one million, one hundred forty-nine thousand, seven hundred forty-five".