2865135545 has 16 divisors (see below), whose sum is σ = 3644239248. Its totient is φ = 2155008000.

The previous prime is 2865135541. The next prime is 2865135551. The reversal of 2865135545 is 5455315682.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 386987584 + 2478147961 = 19672^2 + 49781^2 .

It is not a de Polignac number, because 2865135545 - 2² = 2865135541 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2865135496 and 2865135505.

It is not an unprimeable number, because it can be changed into a prime (2865135541) 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, 65795 + ... + 100295.

It is an arithmetic number, because the mean of its divisors is an integer number (227764953).

Almost surely, 2^2865135545 is an apocalyptic number.

It is an amenable number.

2865135545 is a deficient number, since it is larger than the sum of its proper divisors (779103703).

2865135545 is a wasteful number, since it uses less digits than its factorization.

2865135545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35500.

The product of its digits is 720000, while the sum is 44.

The square root of 2865135545 is about 53526.9609169062. The cubic root of 2865135545 is about 1420.3053540575.

The spelling of 2865135545 in words is "two billion, eight hundred sixty-five million, one hundred thirty-five thousand, five hundred forty-five".