90440730503 has 2 divisors, whose sum is σ = 90440730504. Its totient is φ = 90440730502.

The previous prime is 90440730469. The next prime is 90440730539. The reversal of 90440730503 is 30503704409.

It is a weak prime.

It is an emirp because it is prime and its reverse (30503704409) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90440730503 - 2¹⁰ = 90440729479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90440730563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45220365251 + 45220365252.

It is an arithmetic number, because the mean of its divisors is an integer number (45220365252).

Almost surely, 2^90440730503 is an apocalyptic number.

90440730503 is a deficient number, since it is larger than the sum of its proper divisors (1).

90440730503 is an equidigital number, since it uses as much as digits as its factorization.

90440730503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 35.

The spelling of 90440730503 in words is "ninety billion, four hundred forty million, seven hundred thirty thousand, five hundred three".