1640995982828 has 6 divisors (see below), whose sum is σ = 2871742969956. Its totient is φ = 820497991412.

The previous prime is 1640995982827. The next prime is 1640995982849. The reversal of 1640995982828 is 8282895990461.

It is not an unprimeable number, because it can be changed into a prime (1640995982827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 205124497850 + ... + 205124497857.

It is an arithmetic number, because the mean of its divisors is an integer number (478623828326).

Almost surely, 2^{1640995982828} is an apocalyptic number.

It is an amenable number.

1640995982828 is a deficient number, since it is larger than the sum of its proper divisors (1230746987128).

1640995982828 is a wasteful number, since it uses less digits than its factorization.

1640995982828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410248995711 (or 410248995709 counting only the distinct ones).

The product of its (nonzero) digits is 179159040, while the sum is 71.

The spelling of 1640995982828 in words is "one trillion, six hundred forty billion, nine hundred ninety-five million, nine hundred eighty-two thousand, eight hundred twenty-eight".