123545554001051 has 32 divisors (see below), whose sum is σ = 157609082910720. Its totient is φ = 94242615578496.

The previous prime is 123545554001029. The next prime is 123545554001071. The reversal of 123545554001051 is 150100455545321.

It is not a de Polignac number, because 123545554001051 - 2¹⁰ = 123545554000027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123545554001021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 215280836 + ... + 215853953.

It is an arithmetic number, because the mean of its divisors is an integer number (4925283840960).

Almost surely, 2^{123545554001051} is an apocalyptic number.

123545554001051 is a deficient number, since it is larger than the sum of its proper divisors (34063528909669).

123545554001051 is a wasteful number, since it uses less digits than its factorization.

123545554001051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431134923.

The product of its (nonzero) digits is 300000, while the sum is 41.

The spelling of 123545554001051 in words is "one hundred twenty-three trillion, five hundred forty-five billion, five hundred fifty-four million, one thousand, fifty-one".