990250473100 has 72 divisors (see below), whose sum is σ = 2522194784480. Its totient is φ = 330338373120.

The previous prime is 990250473071. The next prime is 990250473101. The reversal of 990250473100 is 1374052099.

990250473100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×990250473100² (a number of 25 digits) contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 19090905 + ... + 19142704.

Almost surely, 2^990250473100 is an apocalyptic number.

It is an amenable number.

990250473100 is an abundant number, since it is smaller than the sum of its proper divisors (1531944311380).

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

990250473100 is a wasteful number, since it uses less digits than its factorization.

990250473100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38233667 (or 38233660 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 40.

The spelling of 990250473100 in words is "nine hundred ninety billion, two hundred fifty million, four hundred seventy-three thousand, one hundred".