121752061613 has 8 divisors (see below), whose sum is σ = 149848691328. Its totient is φ = 96331301424.

The previous prime is 121752061601. The next prime is 121752061687. The reversal of 121752061613 is 316160257121.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 121752061613 - 2⁴ = 121752061597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121752061913) 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, 668967281 + ... + 668967462.

It is an arithmetic number, because the mean of its divisors is an integer number (18731086416).

Almost surely, 2^121752061613 is an apocalyptic number.

121752061613 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

121752061613 is a deficient number, since it is larger than the sum of its proper divisors (28096629715).

121752061613 is a wasteful number, since it uses less digits than its factorization.

121752061613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337934763.

The product of its (nonzero) digits is 15120, while the sum is 35.

The spelling of 121752061613 in words is "one hundred twenty-one billion, seven hundred fifty-two million, sixty-one thousand, six hundred thirteen".