990556860354335 has 16 divisors (see below), whose sum is σ = 1204347867431040. Its totient is φ = 782002951641600.

The previous prime is 990556860354199. The next prime is 990556860354337. The reversal of 990556860354335 is 533453068655099.

It is not a de Polignac number, because 990556860354335 - 2²⁶ = 990556793245471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990556860354337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 658833242 + ... + 660335031.

It is an arithmetic number, because the mean of its divisors is an integer number (75271741714440).

Almost surely, 2^{990556860354335} is an apocalyptic number.

990556860354335 is a deficient number, since it is larger than the sum of its proper divisors (213791007076705).

990556860354335 is a wasteful number, since it uses less digits than its factorization.

990556860354335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1319170258.

The product of its (nonzero) digits is 1574640000, while the sum is 71.

The spelling of 990556860354335 in words is "nine hundred ninety trillion, five hundred fifty-six billion, eight hundred sixty million, three hundred fifty-four thousand, three hundred thirty-five".