90454135254542 has 4 divisors (see below), whose sum is σ = 135681202881816. Its totient is φ = 45227067627270.

The previous prime is 90454135254491. The next prime is 90454135254577. The reversal of 90454135254542 is 24545253145409.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22613533813634 + ... + 22613533813637.

It is an arithmetic number, because the mean of its divisors is an integer number (33920300720454).

Almost surely, 2^{90454135254542} is an apocalyptic number.

90454135254542 is a deficient number, since it is larger than the sum of its proper divisors (45227067627274).

90454135254542 is a wasteful number, since it uses less digits than its factorization.

90454135254542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45227067627273.

The product of its (nonzero) digits is 17280000, while the sum is 53.

The spelling of 90454135254542 in words is "ninety trillion, four hundred fifty-four billion, one hundred thirty-five million, two hundred fifty-four thousand, five hundred forty-two".