90031245445 has 8 divisors (see below), whose sum is σ = 111762925560. Its totient is φ = 69541375680.

The previous prime is 90031245433. The next prime is 90031245449. The reversal of 90031245445 is 54454213009.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 34845409 + 89996400036 = 5903^2 + 299994^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 90031245445 - 2¹¹ = 90031243397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90031245449) 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, 310452426 + ... + 310452715.

It is an arithmetic number, because the mean of its divisors is an integer number (13970365695).

Almost surely, 2^90031245445 is an apocalyptic number.

It is an amenable number.

90031245445 is a deficient number, since it is larger than the sum of its proper divisors (21731680115).

90031245445 is a wasteful number, since it uses less digits than its factorization.

90031245445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620905175.

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 90031245445 in words is "ninety billion, thirty-one million, two hundred forty-five thousand, four hundred forty-five".