90550000542 has 16 divisors (see below), whose sum is σ = 181958297472. Its totient is φ = 30040284120.

The previous prime is 90550000537. The next prime is 90550000543. The reversal of 90550000542 is 24500005509.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90550000543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35760978 + ... + 35763509.

It is an arithmetic number, because the mean of its divisors is an integer number (11372393592).

Almost surely, 2^90550000542 is an apocalyptic number.

90550000542 is an abundant number, since it is smaller than the sum of its proper divisors (91408296930).

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

90550000542 is a wasteful number, since it uses less digits than its factorization.

90550000542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71524703.

The product of its (nonzero) digits is 9000, while the sum is 30.

The spelling of 90550000542 in words is "ninety billion, five hundred fifty million, five hundred forty-two", and thus it is an aban number.