949668581620 has 144 divisors (see below), whose sum is σ = 2222019438912. Its totient is φ = 338071121920.

The previous prime is 949668581599. The next prime is 949668581623. The reversal of 949668581620 is 26185866949.

It is a super-2 number, since 2×949668581620² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (949668581623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 233159904 + ... + 233163976.

It is an arithmetic number, because the mean of its divisors is an integer number (15430690548).

Almost surely, 2^949668581620 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 949668581620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1111009719456).

949668581620 is an abundant number, since it is smaller than the sum of its proper divisors (1272350857292).

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

949668581620 is a wasteful number, since it uses less digits than its factorization.

949668581620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4402 (or 4287 counting only the distinct ones).

The product of its (nonzero) digits is 44789760, while the sum is 64.

The spelling of 949668581620 in words is "nine hundred forty-nine billion, six hundred sixty-eight million, five hundred eighty-one thousand, six hundred twenty".