499895626440 has 192 divisors, whose sum is σ = 1745004384000. Its totient is φ = 114231032832.

The previous prime is 499895626421. The next prime is 499895626453. The reversal of 499895626440 is 44626598994.

It is a hoax number, since the sum of its digits (66) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 27326977 + ... + 27345263.

It is an arithmetic number, because the mean of its divisors is an integer number (9088564500).

Almost surely, 2^499895626440 is an apocalyptic number.

499895626440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 499895626440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (872502192000).

499895626440 is an abundant number, since it is smaller than the sum of its proper divisors (1245108757560).

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

499895626440 is a wasteful number, since it uses less digits than its factorization.

499895626440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22964 (or 22953 counting only the distinct ones).

The product of its (nonzero) digits is 134369280, while the sum is 66.

The spelling of 499895626440 in words is "four hundred ninety-nine billion, eight hundred ninety-five million, six hundred twenty-six thousand, four hundred forty".