87494351187 has 6 divisors (see below), whose sum is σ = 116659818028. Its totient is φ = 58329225904.

The previous prime is 87494351183. The next prime is 87494351249. The reversal of 87494351187 is 78115349478.

It is not a de Polignac number, because 87494351187 - 2² = 87494351183 is a prime.

It is a super-2 number, since 2×87494351187² (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 (87494351183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 426943 + ... + 597719.

Almost surely, 2^87494351187 is an apocalyptic number.

87494351187 is a deficient number, since it is larger than the sum of its proper divisors (29165466841).

87494351187 is an frugal number, since it uses more digits than its factorization.

87494351187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341557 (or 170780 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 57.

The spelling of 87494351187 in words is "eighty-seven billion, four hundred ninety-four million, three hundred fifty-one thousand, one hundred eighty-seven".