87109494219 has 24 divisors (see below), whose sum is σ = 137281257984. Its totient is φ = 52786782000.

The previous prime is 87109494217. The next prime is 87109494221. The reversal of 87109494219 is 91249490178.

It is an interprime number because it is at equal distance from previous prime (87109494217) and next prime (87109494221).

It is not a de Polignac number, because 87109494219 - 2¹ = 87109494217 is a prime.

It is a super-2 number, since 2×87109494219² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87109494217) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 769854 + ... + 875724.

It is an arithmetic number, because the mean of its divisors is an integer number (5720052416).

Almost surely, 2^87109494219 is an apocalyptic number.

87109494219 is a deficient number, since it is larger than the sum of its proper divisors (50171763765).

87109494219 is a wasteful number, since it uses less digits than its factorization.

87109494219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114199 (or 114196 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 54.

The spelling of 87109494219 in words is "eighty-seven billion, one hundred nine million, four hundred ninety-four thousand, two hundred nineteen".