90487613144 has 8 divisors (see below), whose sum is σ = 169664274660. Its totient is φ = 45243806568.

The previous prime is 90487613143. The next prime is 90487613147. The reversal of 90487613144 is 44131678409.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90487613143) 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 as a sum of consecutive naturals, namely, 5655475814 + ... + 5655475829.

Almost surely, 2^90487613144 is an apocalyptic number.

It is an amenable number.

90487613144 is a deficient number, since it is larger than the sum of its proper divisors (79176661516).

90487613144 is a wasteful number, since it uses less digits than its factorization.

90487613144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11310951649 (or 11310951645 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 47.

The spelling of 90487613144 in words is "ninety billion, four hundred eighty-seven million, six hundred thirteen thousand, one hundred forty-four".