1640020130204 has 48 divisors (see below), whose sum is σ = 2957672374272. Its totient is φ = 795258196992.

The previous prime is 1640020130201. The next prime is 1640020130227. The reversal of 1640020130204 is 4020310200461.

It is a super-3 number, since 3×1640020130204³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 1640020130204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1640020130201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17314277 + ... + 17408739.

It is an arithmetic number, because the mean of its divisors is an integer number (61618174464).

Almost surely, 2^{1640020130204} is an apocalyptic number.

It is an amenable number.

1640020130204 is a deficient number, since it is larger than the sum of its proper divisors (1317652244068).

1640020130204 is a wasteful number, since it uses less digits than its factorization.

1640020130204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95226 (or 95224 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 1640020130204 its reverse (4020310200461), we get a palindrome (5660330330665).

The spelling of 1640020130204 in words is "one trillion, six hundred forty billion, twenty million, one hundred thirty thousand, two hundred four".