1549366640640 has 1080 divisors, whose sum is σ = 6730512188400. Its totient is φ = 326800244736.

The previous prime is 1549366640623. The next prime is 1549366640699. The reversal of 1549366640640 is 460466639451.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 469645711 + ... + 469649009.

It is an arithmetic number, because the mean of its divisors is an integer number (6231955730).

Almost surely, 2^{1549366640640} is an apocalyptic number.

1549366640640 is a gapful number since it is divisible by the number (10) 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 1549366640640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3365256094200).

1549366640640 is an abundant number, since it is smaller than the sum of its proper divisors (5181145547760).

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

1549366640640 is a wasteful number, since it uses less digits than its factorization.

1549366640640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3365 (or 3329 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 54.

The spelling of 1549366640640 in words is "one trillion, five hundred forty-nine billion, three hundred sixty-six million, six hundred forty thousand, six hundred forty".