90143276661618 has 16 divisors (see below), whose sum is σ = 180443188048896. Its totient is φ = 30021653099600.

The previous prime is 90143276661601. The next prime is 90143276661649. The reversal of 90143276661618 is 81616667234109.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6526439421 + ... + 6526453232.

It is an arithmetic number, because the mean of its divisors is an integer number (11277699253056).

Almost surely, 2^{90143276661618} is an apocalyptic number.

90143276661618 is an abundant number, since it is smaller than the sum of its proper divisors (90299911387278).

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

90143276661618 is a wasteful number, since it uses less digits than its factorization.

90143276661618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13052893809.

The product of its (nonzero) digits is 15676416, while the sum is 60.

The spelling of 90143276661618 in words is "ninety trillion, one hundred forty-three billion, two hundred seventy-six million, six hundred sixty-one thousand, six hundred eighteen".