123571116487 has 16 divisors (see below), whose sum is σ = 160092136960. Its totient is φ = 92624733792.

The previous prime is 123571116481. The next prime is 123571116509. The reversal of 123571116487 is 784611175321.

It is a cyclic number.

It is not a de Polignac number, because 123571116487 - 2³¹ = 121423632839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123571116481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35733123 + ... + 35736580.

It is an arithmetic number, because the mean of its divisors is an integer number (10005758560).

Almost surely, 2^123571116487 is an apocalyptic number.

123571116487 is a deficient number, since it is larger than the sum of its proper divisors (36521020473).

123571116487 is a wasteful number, since it uses less digits than its factorization.

123571116487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71469742.

The product of its digits is 282240, while the sum is 46.

The spelling of 123571116487 in words is "one hundred twenty-three billion, five hundred seventy-one million, one hundred sixteen thousand, four hundred eighty-seven".