123354454045555 has 8 divisors (see below), whose sum is σ = 148049363282832. Its totient is φ = 98667550951008.

The previous prime is 123354454045547. The next prime is 123354454045561. The reversal of 123354454045555 is 555540454453321.

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 123354454045555 - 2³ = 123354454045547 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123354454045496 and 123354454045505.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2001501784 + ... + 2001563413.

It is an arithmetic number, because the mean of its divisors is an integer number (18506170410354).

Almost surely, 2^{123354454045555} is an apocalyptic number.

123354454045555 is a deficient number, since it is larger than the sum of its proper divisors (24694909237277).

123354454045555 is an equidigital number, since it uses as much as digits as its factorization.

123354454045555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4003071365.

The product of its (nonzero) digits is 72000000, while the sum is 55.

The spelling of 123354454045555 in words is "one hundred twenty-three trillion, three hundred fifty-four billion, four hundred fifty-four million, forty-five thousand, five hundred fifty-five".