87146018131 has 4 divisors (see below), whose sum is σ = 87211690912. Its totient is φ = 87080345352.

The previous prime is 87146018081. The next prime is 87146018191. The reversal of 87146018131 is 13181064178.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87146018131 is a prime.

It is a super-2 number, since 2×87146018131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87146018191) 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, 32834400 + ... + 32837053.

It is an arithmetic number, because the mean of its divisors is an integer number (21802922728).

Almost surely, 2^87146018131 is an apocalyptic number.

87146018131 is a deficient number, since it is larger than the sum of its proper divisors (65672781).

87146018131 is a wasteful number, since it uses less digits than its factorization.

87146018131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65672780.

The product of its (nonzero) digits is 32256, while the sum is 40.

The spelling of 87146018131 in words is "eighty-seven billion, one hundred forty-six million, eighteen thousand, one hundred thirty-one".