90538705087402 has 64 divisors (see below), whose sum is σ = 161884638115200. Its totient is φ = 37433528524800.

The previous prime is 90538705087339. The next prime is 90538705087403. The reversal of 90538705087402 is 20478050783509.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (90538705087403) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20790474 + ... + 24765322.

It is an arithmetic number, because the mean of its divisors is an integer number (2529447470550).

Almost surely, 2^{90538705087402} is an apocalyptic number.

90538705087402 is a deficient number, since it is larger than the sum of its proper divisors (71345933027798).

90538705087402 is a wasteful number, since it uses less digits than its factorization.

90538705087402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3976039.

The product of its (nonzero) digits is 16934400, while the sum is 58.

The spelling of 90538705087402 in words is "ninety trillion, five hundred thirty-eight billion, seven hundred five million, eighty-seven thousand, four hundred two".