121451980623 has 16 divisors (see below), whose sum is σ = 162945968640. Its totient is φ = 80463230496.

The previous prime is 121451980621. The next prime is 121451980687. The reversal of 121451980623 is 326089154121.

It is not a de Polignac number, because 121451980623 - 2¹ = 121451980621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121451980621) 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 15 ways as a sum of consecutive naturals, for example, 2155038 + ... + 2210676.

It is an arithmetic number, because the mean of its divisors is an integer number (10184123040).

Almost surely, 2^121451980623 is an apocalyptic number.

121451980623 is a deficient number, since it is larger than the sum of its proper divisors (41493988017).

121451980623 is a wasteful number, since it uses less digits than its factorization.

121451980623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60166.

The product of its (nonzero) digits is 103680, while the sum is 42.

The spelling of 121451980623 in words is "one hundred twenty-one billion, four hundred fifty-one million, nine hundred eighty thousand, six hundred twenty-three".