121752057775 has 6 divisors (see below), whose sum is σ = 150972551672. Its totient is φ = 97401646200.

The previous prime is 121752057769. The next prime is 121752057781. The reversal of 121752057775 is 577750257121.

It is an interprime number because it is at equal distance from previous prime (121752057769) and next prime (121752057781).

It is not a de Polignac number, because 121752057775 - 2⁵ = 121752057743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2435041131 + ... + 2435041180.

Almost surely, 2^121752057775 is an apocalyptic number.

121752057775 is a deficient number, since it is larger than the sum of its proper divisors (29220493897).

121752057775 is an equidigital number, since it uses as much as digits as its factorization.

121752057775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4870082321 (or 4870082316 counting only the distinct ones).

The product of its (nonzero) digits is 1200500, while the sum is 49.

The spelling of 121752057775 in words is "one hundred twenty-one billion, seven hundred fifty-two million, fifty-seven thousand, seven hundred seventy-five".