494726538240 has 1056 divisors, whose sum is σ = 1993765947264. Its totient is φ = 116572815360.

The previous prime is 494726538221. The next prime is 494726538289. The reversal of 494726538240 is 42835627494.

It is a happy number.

494726538240 is a `hidden beast` number, since 4 + 9 + 47 + 26 + 538 + 2 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (1056).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 506372632 + ... + 506373608.

Almost surely, 2^494726538240 is an apocalyptic number.

494726538240 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 494726538240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (996882973632).

494726538240 is an abundant number, since it is smaller than the sum of its proper divisors (1499039409024).

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

494726538240 is a wasteful number, since it uses less digits than its factorization.

494726538240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065 (or 1035 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 54.

The spelling of 494726538240 in words is "four hundred ninety-four billion, seven hundred twenty-six million, five hundred thirty-eight thousand, two hundred forty".