1689101930640 has 80 divisors (see below), whose sum is σ = 5416775179200. Its totient is φ = 434895207936.

The previous prime is 1689101930629. The next prime is 1689101930653. The reversal of 1689101930640 is 460391019861.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 1689101930640.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121336570 + ... + 121350489.

It is an arithmetic number, because the mean of its divisors is an integer number (67709689740).

Almost surely, 2^{1689101930640} is an apocalyptic number.

1689101930640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1689101930640 is an abundant number, since it is smaller than the sum of its proper divisors (3727673248560).

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

1689101930640 is a wasteful number, since it uses less digits than its factorization.

1689101930640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242687104 (or 242687098 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 48.

The spelling of 1689101930640 in words is "one trillion, six hundred eighty-nine billion, one hundred one million, nine hundred thirty thousand, six hundred forty".