2002403723904 has 48 divisors (see below), whose sum is σ = 5762125302570. Its totient is φ = 667467907584.

The previous prime is 2002403723869. The next prime is 2002403723911. The reversal of 2002403723904 is 4093273042002.

It is a happy number.

2002403723904 is a `hidden beast` number, since 20 + 0 + 240 + 3 + 7 + 2 + 390 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1878325070400 + 124078653504 = 1370520^2 + 352248^2 .

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×2002403723904² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 869097687 + ... + 869099990.

Almost surely, 2^{2002403723904} is an apocalyptic number.

2002403723904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2002403723904 is an abundant number, since it is smaller than the sum of its proper divisors (3759721578666).

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

2002403723904 is a wasteful number, since it uses less digits than its factorization.

2002403723904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1738197697 (or 1738197682 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

Adding to 2002403723904 its reverse (4093273042002), we get a palindrome (6095676765906).

The spelling of 2002403723904 in words is "two trillion, two billion, four hundred three million, seven hundred twenty-three thousand, nine hundred four".