400664020003 has 16 divisors (see below), whose sum is σ = 438991652736. Its totient is φ = 363420858240.

The previous prime is 400664019961. The next prime is 400664020007. The reversal of 400664020003 is 300020466004.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400664020003 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 400664020003.

It is not an unprimeable number, because it can be changed into a prime (400664020007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 553926 + ... + 1052692.

It is an arithmetic number, because the mean of its divisors is an integer number (27436978296).

Almost surely, 2^400664020003 is an apocalyptic number.

400664020003 is a deficient number, since it is larger than the sum of its proper divisors (38327632733).

400664020003 is a wasteful number, since it uses less digits than its factorization.

400664020003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499854.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 400664020003 its reverse (300020466004), we get a palindrome (700684486007).

The spelling of 400664020003 in words is "four hundred billion, six hundred sixty-four million, twenty thousand, three".