87989643041284 has 12 divisors (see below), whose sum is σ = 156091216080604. Its totient is φ = 43392152732544.

The previous prime is 87989643041257. The next prime is 87989643041297. The reversal of 87989643041284 is 48214034698978.

It can be written as a sum of positive squares in 2 ways, for example, as 68925329328384 + 19064313712900 = 8302128^2 + 4366270^2 .

It is a Harshad number since it is a multiple of its sum of digits (73).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150667196697 + ... + 150667197280.

Almost surely, 2^{87989643041284} is an apocalyptic number.

It is an amenable number.

87989643041284 is a deficient number, since it is larger than the sum of its proper divisors (68101573039320).

87989643041284 is a wasteful number, since it uses less digits than its factorization.

87989643041284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301334394054 (or 301334394052 counting only the distinct ones).

The product of its (nonzero) digits is 668860416, while the sum is 73.

The spelling of 87989643041284 in words is "eighty-seven trillion, nine hundred eighty-nine billion, six hundred forty-three million, forty-one thousand, two hundred eighty-four".