90651234786 has 16 divisors (see below), whose sum is σ = 207202822464. Its totient is φ = 25900352784.

The previous prime is 90651234721. The next prime is 90651234787. The reversal of 90651234786 is 68743215609.

It is not an unprimeable number, because it can be changed into a prime (90651234787) 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 7 ways as a sum of consecutive naturals, for example, 1079181325 + ... + 1079181408.

It is an arithmetic number, because the mean of its divisors is an integer number (12950176404).

It is a 2-persistent number, because it is pandigital, and so is 2⋅90651234786 = 181302469572, but 3⋅90651234786 = 271953704358 is not.

Almost surely, 2^90651234786 is an apocalyptic number.

90651234786 is an abundant number, since it is smaller than the sum of its proper divisors (116551587678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90651234786 is a wasteful number, since it uses less digits than its factorization.

90651234786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2158362745.

The product of its (nonzero) digits is 2177280, while the sum is 51.

The spelling of 90651234786 in words is "ninety billion, six hundred fifty-one million, two hundred thirty-four thousand, seven hundred eighty-six".