131428728586 has 16 divisors (see below), whose sum is σ = 208466028288. Its totient is φ = 62043458400.

The previous prime is 131428728559. The next prime is 131428728593. The reversal of 131428728586 is 685827824131.

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, 25848900 + ... + 25853983.

It is an arithmetic number, because the mean of its divisors is an integer number (13029126768).

Almost surely, 2^131428728586 is an apocalyptic number.

131428728586 is a deficient number, since it is larger than the sum of its proper divisors (77037299702).

131428728586 is a wasteful number, since it uses less digits than its factorization.

131428728586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51702957.

The product of its digits is 5160960, while the sum is 55.

The spelling of 131428728586 in words is "one hundred thirty-one billion, four hundred twenty-eight million, seven hundred twenty-eight thousand, five hundred eighty-six".