90578258042 has 24 divisors (see below), whose sum is σ = 144639203904. Its totient is φ = 42533661632.

The previous prime is 90578258027. The next prime is 90578258047. The reversal of 90578258042 is 24085287509.

It is not an unprimeable number, because it can be changed into a prime (90578258047) 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 11 ways as a sum of consecutive naturals, for example, 102143 + ... + 437709.

It is an arithmetic number, because the mean of its divisors is an integer number (6026633496).

Almost surely, 2^90578258042 is an apocalyptic number.

90578258042 is a deficient number, since it is larger than the sum of its proper divisors (54060945862).

90578258042 is a wasteful number, since it uses less digits than its factorization.

90578258042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336070 (or 336053 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 50.

The spelling of 90578258042 in words is "ninety billion, five hundred seventy-eight million, two hundred fifty-eight thousand, forty-two".