121751671593 has 8 divisors (see below), whose sum is σ = 162337264288. Its totient is φ = 81166929984.

The previous prime is 121751671567. The next prime is 121751671609. The reversal of 121751671593 is 395176157121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121751671593 - 2¹² = 121751667497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121751671553) 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 7 ways as a sum of consecutive naturals, for example, 292305 + ... + 573537.

It is an arithmetic number, because the mean of its divisors is an integer number (20292158036).

Almost surely, 2^121751671593 is an apocalyptic number.

It is an amenable number.

121751671593 is a deficient number, since it is larger than the sum of its proper divisors (40585592695).

121751671593 is a wasteful number, since it uses less digits than its factorization.

121751671593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425543.

The product of its digits is 396900, while the sum is 48.

The spelling of 121751671593 in words is "one hundred twenty-one billion, seven hundred fifty-one million, six hundred seventy-one thousand, five hundred ninety-three".