990817614942 has 8 divisors (see below), whose sum is σ = 1981635229896. Its totient is φ = 330272538312.

The previous prime is 990817614817. The next prime is 990817614947. The reversal of 990817614942 is 249416718099.

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

990817614942 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990817614947) 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 3 ways as a sum of consecutive naturals, for example, 82568134573 + ... + 82568134584.

It is an arithmetic number, because the mean of its divisors is an integer number (247704403737).

Almost surely, 2^990817614942 is an apocalyptic number.

990817614942 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

990817614942 is a wasteful number, since it uses less digits than its factorization.

990817614942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165136269162.

The product of its (nonzero) digits is 7838208, while the sum is 60.

The spelling of 990817614942 in words is "nine hundred ninety billion, eight hundred seventeen million, six hundred fourteen thousand, nine hundred forty-two".