1640680290145 has 16 divisors (see below), whose sum is σ = 2120291534592. Its totient is φ = 1211563419840.

The previous prime is 1640680290121. The next prime is 1640680290173. The reversal of 1640680290145 is 5410920860461.

It is a happy number.

It is not a de Polignac number, because 1640680290145 - 2¹¹ = 1640680288097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1640680290095 and 1640680290104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7667884 + ... + 7878946.

It is an arithmetic number, because the mean of its divisors is an integer number (132518220912).

Almost surely, 2^{1640680290145} is an apocalyptic number.

It is an amenable number.

1640680290145 is a deficient number, since it is larger than the sum of its proper divisors (479611244447).

1640680290145 is a wasteful number, since it uses less digits than its factorization.

1640680290145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330672.

The product of its (nonzero) digits is 414720, while the sum is 46.

The spelling of 1640680290145 in words is "one trillion, six hundred forty billion, six hundred eighty million, two hundred ninety thousand, one hundred forty-five".