2665151539 has 4 divisors (see below), whose sum is σ = 2691539280. Its totient is φ = 2638763800.

The previous prime is 2665151537. The next prime is 2665151569. The reversal of 2665151539 is 9351515662.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2665151539 - 2¹ = 2665151537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2665151495 and 2665151504.

It is not an unprimeable number, because it can be changed into a prime (2665151537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13193719 + ... + 13193920.

It is an arithmetic number, because the mean of its divisors is an integer number (672884820).

Almost surely, 2^2665151539 is an apocalyptic number.

2665151539 is a deficient number, since it is larger than the sum of its proper divisors (26387741).

2665151539 is a wasteful number, since it uses less digits than its factorization.

2665151539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26387740.

The product of its digits is 243000, while the sum is 43.

The square root of 2665151539 is about 51625.1057044923. The cubic root of 2665151539 is about 1386.4598662329.

The spelling of 2665151539 in words is "two billion, six hundred sixty-five million, one hundred fifty-one thousand, five hundred thirty-nine".