121517340488 has 16 divisors (see below), whose sum is σ = 228032867580. Its totient is φ = 60708575808.

The previous prime is 121517340431. The next prime is 121517340491. The reversal of 121517340488 is 884043715121.

It can be written as a sum of positive squares in 2 ways, for example, as 97105777924 + 24411562564 = 311618^2 + 156242^2 .

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6251495 + ... + 6270902.

Almost surely, 2^121517340488 is an apocalyptic number.

It is an amenable number.

121517340488 is a deficient number, since it is larger than the sum of its proper divisors (106515527092).

121517340488 is a wasteful number, since it uses less digits than its factorization.

121517340488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12523616 (or 12523612 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 44.

The spelling of 121517340488 in words is "one hundred twenty-one billion, five hundred seventeen million, three hundred forty thousand, four hundred eighty-eight".