87419288881 has 4 divisors (see below), whose sum is σ = 91220127552. Its totient is φ = 83618450212.

The previous prime is 87419288851. The next prime is 87419288893. The reversal of 87419288881 is 18888291478.

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 a de Polignac number, because none of the positive numbers 2^k-87419288881 is a prime.

It is a super-2 number, since 2×87419288881² (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 (87419288851) 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, 1900419301 + ... + 1900419346.

It is an arithmetic number, because the mean of its divisors is an integer number (22805031888).

Almost surely, 2^87419288881 is an apocalyptic number.

It is an amenable number.

87419288881 is a deficient number, since it is larger than the sum of its proper divisors (3800838671).

87419288881 is a wasteful number, since it uses less digits than its factorization.

87419288881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3800838670.

The product of its digits is 16515072, while the sum is 64.

The spelling of 87419288881 in words is "eighty-seven billion, four hundred nineteen million, two hundred eighty-eight thousand, eight hundred eighty-one".