2665405039 has 16 divisors (see below), whose sum is σ = 2998437120. Its totient is φ = 2348280000.

The previous prime is 2665405037. The next prime is 2665405069. The reversal of 2665405039 is 9305045662.

It is not a de Polignac number, because 2665405039 - 2¹ = 2665405037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2665404992 and 2665405010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2665405037) 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, 48532 + ... + 87670.

It is an arithmetic number, because the mean of its divisors is an integer number (187402320).

Almost surely, 2^2665405039 is an apocalyptic number.

2665405039 is a deficient number, since it is larger than the sum of its proper divisors (333032081).

2665405039 is a wasteful number, since it uses less digits than its factorization.

2665405039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39342.

The product of its (nonzero) digits is 194400, while the sum is 40.

The square root of 2665405039 is about 51627.5608468965. The cubic root of 2665405039 is about 1386.5038232622.

It can be divided in two parts, 2665 and 405039, that added together give a palindrome (407704).

The spelling of 2665405039 in words is "two billion, six hundred sixty-five million, four hundred five thousand, thirty-nine".