87445194128073 has 12 divisors (see below), whose sum is σ = 127015365774960. Its totient is φ = 57971115659256.

The previous prime is 87445194128059. The next prime is 87445194128081. The reversal of 87445194128073 is 37082149154478.

87445194128073 is a `hidden beast` number, since 8 + 7 + 4 + 4 + 519 + 41 + 2 + 8 + 0 + 73 = 666.

It is not a de Polignac number, because 87445194128073 - 2⁹ = 87445194127561 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 87445194128073.

It is not an unprimeable number, because it can be changed into a prime (87445195128073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27140033811 + ... + 27140037032.

It is an arithmetic number, because the mean of its divisors is an integer number (10584613814580).

Almost surely, 2^{87445194128073} is an apocalyptic number.

It is an amenable number.

87445194128073 is a deficient number, since it is larger than the sum of its proper divisors (39570171646887).

87445194128073 is a wasteful number, since it uses less digits than its factorization.

87445194128073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54280071028 (or 54280071025 counting only the distinct ones).

The product of its (nonzero) digits is 54190080, while the sum is 63.

The spelling of 87445194128073 in words is "eighty-seven trillion, four hundred forty-five billion, one hundred ninety-four million, one hundred twenty-eight thousand, seventy-three".