2103401664 has 168 divisors, whose sum is σ = 7420518560. Its totient is φ = 554729472.

The previous prime is 2103401627. The next prime is 2103401693. The reversal of 2103401664 is 4661043012.

It is a tau number, because it is divible by the number of its divisors (168).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32352 + ... + 72480.

Almost surely, 2^2103401664 is an apocalyptic number.

2103401664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2103401664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3710259280).

2103401664 is an abundant number, since it is smaller than the sum of its proper divisors (5317116896).

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

2103401664 is a wasteful number, since it uses less digits than its factorization.

2103401664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40167 (or 40154 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 2103401664 is about 45862.8571286177. The cubic root of 2103401664 is about 1281.2702364315.

Adding to 2103401664 its reverse (4661043012), we get a palindrome (6764444676).

The spelling of 2103401664 in words is "two billion, one hundred three million, four hundred one thousand, six hundred sixty-four".