494467781440 has 56 divisors (see below), whose sum is σ = 1177659417600. Its totient is φ = 197752171008.

The previous prime is 494467781417. The next prime is 494467781459. The reversal of 494467781440 is 44187764494.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1716961 + ... + 1984159.

Almost surely, 2^494467781440 is an apocalyptic number.

494467781440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

494467781440 is an abundant number, since it is smaller than the sum of its proper divisors (683191636160).

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

494467781440 is a wasteful number, since it uses less digits than its factorization.

494467781440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272999 (or 272989 counting only the distinct ones).

The product of its (nonzero) digits is 21676032, while the sum is 58.

The spelling of 494467781440 in words is "four hundred ninety-four billion, four hundred sixty-seven million, seven hundred eighty-one thousand, four hundred forty".