86539550638 has 16 divisors (see below), whose sum is σ = 135503229024. Its totient is φ = 41410150560.

The previous prime is 86539550567. The next prime is 86539550639. The reversal of 86539550638 is 83605593568.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86539550639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9581170 + ... + 9590197.

It is an arithmetic number, because the mean of its divisors is an integer number (8468951814).

Almost surely, 2^86539550638 is an apocalyptic number.

86539550638 is a deficient number, since it is larger than the sum of its proper divisors (48963678386).

86539550638 is a wasteful number, since it uses less digits than its factorization.

86539550638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19171467.

The product of its (nonzero) digits is 23328000, while the sum is 58.

The spelling of 86539550638 in words is "eighty-six billion, five hundred thirty-nine million, five hundred fifty thousand, six hundred thirty-eight".