1640744114800 has 120 divisors (see below), whose sum is σ = 4505393350656. Its totient is φ = 562493541120.

The previous prime is 1640744114791. The next prime is 1640744114833. The reversal of 1640744114800 is 84114470461.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56161797 + ... + 56191003.

Almost surely, 2^{1640744114800} is an apocalyptic number.

1640744114800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1640744114800 is an abundant number, since it is smaller than the sum of its proper divisors (2864649235856).

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

1640744114800 is a wasteful number, since it uses less digits than its factorization.

1640744114800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49295 (or 49284 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 40.

The spelling of 1640744114800 in words is "one trillion, six hundred forty billion, seven hundred forty-four million, one hundred fourteen thousand, eight hundred".