87281995628 has 6 divisors (see below), whose sum is σ = 152743492356. Its totient is φ = 43640997812.

The previous prime is 87281995571. The next prime is 87281995667. The reversal of 87281995628 is 82659918278.

It is a super-2 number, since 2×87281995628² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10910249450 + ... + 10910249457.

It is an arithmetic number, because the mean of its divisors is an integer number (25457248726).

Almost surely, 2^87281995628 is an apocalyptic number.

It is an amenable number.

87281995628 is a deficient number, since it is larger than the sum of its proper divisors (65461496728).

87281995628 is a wasteful number, since it uses less digits than its factorization.

87281995628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21820498911 (or 21820498909 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 65.

The spelling of 87281995628 in words is "eighty-seven billion, two hundred eighty-one million, nine hundred ninety-five thousand, six hundred twenty-eight".