121628752055 has 8 divisors (see below), whose sum is σ = 146414928672. Its totient is φ = 96996050848.

The previous prime is 121628752019. The next prime is 121628752057. The reversal of 121628752055 is 550257826121.

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 121628752055 - 2⁶ = 121628751991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121628751997 and 121628752015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121628752057) 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, 38367107 + ... + 38370276.

It is an arithmetic number, because the mean of its divisors is an integer number (18301866084).

Almost surely, 2^121628752055 is an apocalyptic number.

121628752055 is a deficient number, since it is larger than the sum of its proper divisors (24786176617).

121628752055 is an equidigital number, since it uses as much as digits as its factorization.

121628752055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76737705.

The product of its (nonzero) digits is 336000, while the sum is 44.

The spelling of 121628752055 in words is "one hundred twenty-one billion, six hundred twenty-eight million, seven hundred fifty-two thousand, fifty-five".