121604427055 has 16 divisors (see below), whose sum is σ = 147806023680. Its totient is φ = 96030294048.

The previous prime is 121604427031. The next prime is 121604427073. The reversal of 121604427055 is 550724406121.

It is a cyclic number.

It is not a de Polignac number, because 121604427055 - 2²⁵ = 121570872623 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1832994 + ... + 1898176.

It is an arithmetic number, because the mean of its divisors is an integer number (9237876480).

Almost surely, 2^121604427055 is an apocalyptic number.

121604427055 is a deficient number, since it is larger than the sum of its proper divisors (26201596625).

121604427055 is an equidigital number, since it uses as much as digits as its factorization.

121604427055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69990.

The product of its (nonzero) digits is 67200, while the sum is 37.

The spelling of 121604427055 in words is "one hundred twenty-one billion, six hundred four million, four hundred twenty-seven thousand, fifty-five".