990811464503 has 16 divisors (see below), whose sum is σ = 1143696443904. Its totient is φ = 840772131360.

The previous prime is 990811464499. The next prime is 990811464581. The reversal of 990811464503 is 305464118099.

It is not a de Polignac number, because 990811464503 - 2² = 990811464499 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990811464583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 694001 + ... + 1569477.

It is an arithmetic number, because the mean of its divisors is an integer number (71481027744).

Almost surely, 2^990811464503 is an apocalyptic number.

990811464503 is a deficient number, since it is larger than the sum of its proper divisors (152884979401).

990811464503 is a wasteful number, since it uses less digits than its factorization.

990811464503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877102.

The product of its (nonzero) digits is 933120, while the sum is 50.

The spelling of 990811464503 in words is "nine hundred ninety billion, eight hundred eleven million, four hundred sixty-four thousand, five hundred three".