90542013603 has 32 divisors (see below), whose sum is σ = 127733760000. Its totient is φ = 56889155232.

The previous prime is 90542013599. The next prime is 90542013619. The reversal of 90542013603 is 30631024509.

It is a Cunningham number, because it is equal to 300902²-1.

It is not a de Polignac number, because 90542013603 - 2² = 90542013599 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90542013623) 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 31 ways as a sum of consecutive naturals, for example, 17148718 + ... + 17153996.

It is an arithmetic number, because the mean of its divisors is an integer number (3991680000).

Almost surely, 2^90542013603 is an apocalyptic number.

90542013603 is a deficient number, since it is larger than the sum of its proper divisors (37191746397).

90542013603 is a wasteful number, since it uses less digits than its factorization.

90542013603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6799.

The product of its (nonzero) digits is 19440, while the sum is 33.

The spelling of 90542013603 in words is "ninety billion, five hundred forty-two million, thirteen thousand, six hundred three".