123551054055 has 160 divisors (see below), whose sum is σ = 260757826560. Its totient is φ = 55176318720.

The previous prime is 123551054021. The next prime is 123551054069. The reversal of 123551054055 is 550450155321.

123551054055 is a `hidden beast` number, since 1 + 2 + 3 + 55 + 10 + 540 + 55 = 666.

It is not a de Polignac number, because 123551054055 - 2¹⁴ = 123551037671 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 30287506 + ... + 30291584.

It is an arithmetic number, because the mean of its divisors is an integer number (1629736416).

Almost surely, 2^123551054055 is an apocalyptic number.

123551054055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

123551054055 is an abundant number, since it is smaller than the sum of its proper divisors (137206772505).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123551054055 is a wasteful number, since it uses less digits than its factorization.

123551054055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4643 (or 4634 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 36.

The spelling of 123551054055 in words is "one hundred twenty-three billion, five hundred fifty-one million, fifty-four thousand, fifty-five".