55123146505 has 8 divisors (see below), whose sum is σ = 75597458112. Its totient is φ = 37798729008.

The previous prime is 55123146409. The next prime is 55123146523. The reversal of 55123146505 is 50564132155.

It is a happy number.

55123146505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 55123146505 - 2²⁷ = 54988928777 is a prime.

It is a super-2 number, since 2×55123146505² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

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, 787473487 + ... + 787473556.

It is an arithmetic number, because the mean of its divisors is an integer number (9449682264).

Almost surely, 2^55123146505 is an apocalyptic number.

It is an amenable number.

55123146505 is a deficient number, since it is larger than the sum of its proper divisors (20474311607).

55123146505 is a wasteful number, since it uses less digits than its factorization.

55123146505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574947055.

The product of its (nonzero) digits is 90000, while the sum is 37.

The spelling of 55123146505 in words is "fifty-five billion, one hundred twenty-three million, one hundred forty-six thousand, five hundred five".