87018149945 has 16 divisors (see below), whose sum is σ = 107799767040. Its totient is φ = 67362926400.

The previous prime is 87018149857. The next prime is 87018149947. The reversal of 87018149945 is 54994181078.

It is not a de Polignac number, because 87018149945 - 2¹² = 87018145849 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (87018149947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2674475 + ... + 2706815.

It is an arithmetic number, because the mean of its divisors is an integer number (6737485440).

Almost surely, 2^87018149945 is an apocalyptic number.

It is an amenable number.

87018149945 is a deficient number, since it is larger than the sum of its proper divisors (20781617095).

87018149945 is a wasteful number, since it uses less digits than its factorization.

87018149945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49736.

The product of its (nonzero) digits is 2903040, while the sum is 56.

The spelling of 87018149945 in words is "eighty-seven billion, eighteen million, one hundred forty-nine thousand, nine hundred forty-five".