90489451063 has 24 divisors (see below), whose sum is σ = 99867625200. Its totient is φ = 81929738880.

The previous prime is 90489451037. The next prime is 90489451093. The reversal of 90489451063 is 36015498409.

It is a happy number.

It is not a de Polignac number, because 90489451063 - 2¹³ = 90489442871 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90489450998 and 90489451016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90489451093) 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 23 ways as a sum of consecutive naturals, for example, 42028395 + ... + 42030547.

It is an arithmetic number, because the mean of its divisors is an integer number (4161151050).

Almost surely, 2^90489451063 is an apocalyptic number.

90489451063 is a deficient number, since it is larger than the sum of its proper divisors (9378174137).

90489451063 is a wasteful number, since it uses less digits than its factorization.

90489451063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3423 (or 3412 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 49.

The spelling of 90489451063 in words is "ninety billion, four hundred eighty-nine million, four hundred fifty-one thousand, sixty-three".