121751560623 has 96 divisors (see below), whose sum is σ = 209489172480. Its totient is φ = 62183352000.

The previous prime is 121751560583. The next prime is 121751560631. The reversal of 121751560623 is 326065157121.

It is not a de Polignac number, because 121751560623 - 2⁶ = 121751560559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121751560223) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 48102868 + ... + 48105398.

It is an arithmetic number, because the mean of its divisors is an integer number (2182178880).

Almost surely, 2^121751560623 is an apocalyptic number.

121751560623 is a deficient number, since it is larger than the sum of its proper divisors (87737611857).

121751560623 is a wasteful number, since it uses less digits than its factorization.

121751560623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3049 (or 3042 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 39.

The spelling of 121751560623 in words is "one hundred twenty-one billion, seven hundred fifty-one million, five hundred sixty thousand, six hundred twenty-three".