18771047124 has 24 divisors (see below), whose sum is σ = 44517129888. Its totient is φ = 6154441440.

The previous prime is 18771047083. The next prime is 18771047143. The reversal of 18771047124 is 42174017781.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12821022 + ... + 12822485.

It is an arithmetic number, because the mean of its divisors is an integer number (1854880412).

Almost surely, 2^18771047124 is an apocalyptic number.

It is an amenable number.

18771047124 is an abundant number, since it is smaller than the sum of its proper divisors (25746082764).

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

18771047124 is a wasteful number, since it uses less digits than its factorization.

18771047124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25643575 (or 25643573 counting only the distinct ones).

The product of its (nonzero) digits is 87808, while the sum is 42.

The spelling of 18771047124 in words is "eighteen billion, seven hundred seventy-one million, forty-seven thousand, one hundred twenty-four".