1004020533664 has 48 divisors (see below), whose sum is σ = 2094728501376. Its totient is φ = 472076467200.

The previous prime is 1004020533661. The next prime is 1004020533721. The reversal of 1004020533664 is 4663350204001.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (1004020533661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151032 + ... + 1425079.

It is an arithmetic number, because the mean of its divisors is an integer number (43640177112).

Almost surely, 2^{1004020533664} is an apocalyptic number.

It is an amenable number.

1004020533664 is an abundant number, since it is smaller than the sum of its proper divisors (1090707967712).

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

1004020533664 is a wasteful number, since it uses less digits than its factorization.

1004020533664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1577309 (or 1577301 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 34.

Adding to 1004020533664 its reverse (4663350204001), we get a palindrome (5667370737665).

The spelling of 1004020533664 in words is "one trillion, four billion, twenty million, five hundred thirty-three thousand, six hundred sixty-four".