123571474851 has 16 divisors (see below), whose sum is σ = 184124239488. Its totient is φ = 73065172800.

The previous prime is 123571474823. The next prime is 123571474877. The reversal of 123571474851 is 158474175321.

It is not a de Polignac number, because 123571474851 - 2⁹ = 123571474339 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123571474851.

It is not an unprimeable number, because it can be changed into a prime (123571474801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45664381 + ... + 45667086.

It is an arithmetic number, because the mean of its divisors is an integer number (11507764968).

Almost surely, 2^123571474851 is an apocalyptic number.

123571474851 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

123571474851 is a deficient number, since it is larger than the sum of its proper divisors (60552764637).

123571474851 is a wasteful number, since it uses less digits than its factorization.

123571474851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91331522.

The product of its digits is 940800, while the sum is 48.

The spelling of 123571474851 in words is "one hundred twenty-three billion, five hundred seventy-one million, four hundred seventy-four thousand, eight hundred fifty-one".