121560617607 has 16 divisors (see below), whose sum is σ = 190416632448. Its totient is φ = 68005939680.

The previous prime is 121560617603. The next prime is 121560617621. The reversal of 121560617607 is 706716065121.

It is not a de Polignac number, because 121560617607 - 2² = 121560617603 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121560617603) 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, 141678613 + ... + 141679470.

It is an arithmetic number, because the mean of its divisors is an integer number (11901039528).

Almost surely, 2^121560617607 is an apocalyptic number.

121560617607 is a deficient number, since it is larger than the sum of its proper divisors (68856014841).

121560617607 is a wasteful number, since it uses less digits than its factorization.

121560617607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283358110.

The product of its (nonzero) digits is 105840, while the sum is 42.

The spelling of 121560617607 in words is "one hundred twenty-one billion, five hundred sixty million, six hundred seventeen thousand, six hundred seven".