87746732918 has 16 divisors (see below), whose sum is σ = 143206012320. Its totient is φ = 40080980736.

The previous prime is 87746732911. The next prime is 87746732921. The reversal of 87746732918 is 81923764778.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87746732911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17393738 + ... + 17398781.

It is an arithmetic number, because the mean of its divisors is an integer number (8950375770).

Almost surely, 2^87746732918 is an apocalyptic number.

87746732918 is a deficient number, since it is larger than the sum of its proper divisors (55459279402).

87746732918 is a wasteful number, since it uses less digits than its factorization.

87746732918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34792631.

The product of its digits is 28449792, while the sum is 62.

The spelling of 87746732918 in words is "eighty-seven billion, seven hundred forty-six million, seven hundred thirty-two thousand, nine hundred eighteen".