121375137659 has 8 divisors (see below), whose sum is σ = 121638184560. Its totient is φ = 121112210016.

The previous prime is 121375137601. The next prime is 121375137691. The reversal of 121375137659 is 956731573121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121375137659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121375197659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2184329 + ... + 2239205.

It is an arithmetic number, because the mean of its divisors is an integer number (15204773070).

Almost surely, 2^121375137659 is an apocalyptic number.

121375137659 is a deficient number, since it is larger than the sum of its proper divisors (263046901).

121375137659 is an equidigital number, since it uses as much as digits as its factorization.

121375137659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59629.

The product of its digits is 1190700, while the sum is 50.

The spelling of 121375137659 in words is "one hundred twenty-one billion, three hundred seventy-five million, one hundred thirty-seven thousand, six hundred fifty-nine".