87486077181 has 4 divisors (see below), whose sum is σ = 116648102912. Its totient is φ = 58324051452.

The previous prime is 87486077179. The next prime is 87486077183. The reversal of 87486077181 is 18177068478.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (87486077179) and next prime (87486077183).

It is not a de Polignac number, because 87486077181 - 2¹ = 87486077179 is a prime.

It is a super-2 number, since 2×87486077181² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87486077183) 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, 14581012861 + ... + 14581012866.

It is an arithmetic number, because the mean of its divisors is an integer number (29162025728).

Almost surely, 2^87486077181 is an apocalyptic number.

It is an amenable number.

87486077181 is a deficient number, since it is larger than the sum of its proper divisors (29162025731).

87486077181 is a wasteful number, since it uses less digits than its factorization.

87486077181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29162025730.

The product of its (nonzero) digits is 4214784, while the sum is 57.

The spelling of 87486077181 in words is "eighty-seven billion, four hundred eighty-six million, seventy-seven thousand, one hundred eighty-one".