2665401403 has 24 divisors (see below), whose sum is σ = 3135817152. Its totient is φ = 2258815104.

The previous prime is 2665401341. The next prime is 2665401407. The reversal of 2665401403 is 3041045662.

It is not a de Polignac number, because 2665401403 - 2⁹ = 2665400891 is a prime.

It is a super-2 number, since 2×2665401403² = 14208729278228736818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2665401407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1791726 + ... + 1793212.

It is an arithmetic number, because the mean of its divisors is an integer number (130659048).

Almost surely, 2^2665401403 is an apocalyptic number.

2665401403 is a deficient number, since it is larger than the sum of its proper divisors (470415749).

2665401403 is a wasteful number, since it uses less digits than its factorization.

2665401403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1891 (or 1884 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 2665401403 is about 51627.5256331349. The cubic root of 2665401403 is about 1386.5031927977.

The spelling of 2665401403 in words is "two billion, six hundred sixty-five million, four hundred one thousand, four hundred three".