990250473102 has 256 divisors, whose sum is σ = 2314861701120. Its totient is φ = 279620812800.

The previous prime is 990250473101. The next prime is 990250473139. The reversal of 990250473102 is 201374052099.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990250473101) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1716205038 + ... + 1716205614.

It is an arithmetic number, because the mean of its divisors is an integer number (9042428520).

Almost surely, 2^990250473102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 990250473102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1157430850560).

990250473102 is an abundant number, since it is smaller than the sum of its proper divisors (1324611228018).

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

990250473102 is a wasteful number, since it uses less digits than its factorization.

990250473102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939.

The product of its (nonzero) digits is 136080, while the sum is 42.

The spelling of 990250473102 in words is "nine hundred ninety billion, two hundred fifty million, four hundred seventy-three thousand, one hundred two".