494535621888 has 1296 divisors, whose sum is σ = 1925703876096. Its totient is φ = 125463582720.

The previous prime is 494535621857. The next prime is 494535621889. The reversal of 494535621888 is 888126535494.

494535621888 is a `hidden beast` number, since 4 + 9 + 4 + 53 + 562 + 18 + 8 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (1296).

It is a Harshad number since it is a multiple of its sum of digits (63).

Its product of digits (66355200) is a multiple of the sum of its prime factors (120).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (494535621889) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 11500828395 + ... + 11500828437.

Almost surely, 2^494535621888 is an apocalyptic number.

494535621888 is a gapful number since it is divisible by the number (48) 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 494535621888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (962851938048).

494535621888 is an abundant number, since it is smaller than the sum of its proper divisors (1431168254208).

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

494535621888 is an frugal number, since it uses more digits than its factorization.

494535621888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120 (or 66 counting only the distinct ones).

The product of its digits is 66355200, while the sum is 63.

The spelling of 494535621888 in words is "four hundred ninety-four billion, five hundred thirty-five million, six hundred twenty-one thousand, eight hundred eighty-eight".