123850711871 has 4 divisors (see below), whose sum is σ = 123853671144. Its totient is φ = 123847752600.

The previous prime is 123850711841. The next prime is 123850711877. The reversal of 123850711871 is 178117058321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 178117058321 = 23 ⋅7744219927.

It is a cyclic number.

It is not a de Polignac number, because 123850711871 - 2¹⁴ = 123850695487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123850711877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1415945 + ... + 1500866.

It is an arithmetic number, because the mean of its divisors is an integer number (30963417786).

Almost surely, 2^123850711871 is an apocalyptic number.

123850711871 is a deficient number, since it is larger than the sum of its proper divisors (2959273).

123850711871 is an equidigital number, since it uses as much as digits as its factorization.

123850711871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2959272.

The product of its (nonzero) digits is 94080, while the sum is 44.

The spelling of 123850711871 in words is "one hundred twenty-three billion, eight hundred fifty million, seven hundred eleven thousand, eight hundred seventy-one".