87948389881 has 4 divisors (see below), whose sum is σ = 95943698064. Its totient is φ = 79953081700.

The previous prime is 87948389869. The next prime is 87948389891. The reversal of 87948389881 is 18898384978.

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 a cyclic number.

It is not a de Polignac number, because 87948389881 - 2¹⁷ = 87948258809 is a prime.

It is a super-2 number, since 2×87948389881² (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 (87948389861) 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, 3997654075 + ... + 3997654096.

It is an arithmetic number, because the mean of its divisors is an integer number (23985924516).

Almost surely, 2^87948389881 is an apocalyptic number.

It is an amenable number.

87948389881 is a deficient number, since it is larger than the sum of its proper divisors (7995308183).

87948389881 is a wasteful number, since it uses less digits than its factorization.

87948389881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7995308182.

The product of its digits is 222953472, while the sum is 73.

The spelling of 87948389881 in words is "eighty-seven billion, nine hundred forty-eight million, three hundred eighty-nine thousand, eight hundred eighty-one".