3665515042645 has 8 divisors (see below), whose sum is σ = 4442168725560. Its totient is φ = 2903378251200.

The previous prime is 3665515042559. The next prime is 3665515042667. The reversal of 3665515042645 is 5462405155663.

It can be written as a sum of positive squares in 4 ways, for example, as 1620689401969 + 2044825640676 = 1273063^2 + 1429974^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3665515042645 - 2¹⁷ = 3665514911573 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3665515042592 and 3665515042601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3629222310 + ... + 3629223319.

It is an arithmetic number, because the mean of its divisors is an integer number (555271090695).

Almost surely, 2^{3665515042645} is an apocalyptic number.

It is an amenable number.

3665515042645 is a deficient number, since it is larger than the sum of its proper divisors (776653682915).

3665515042645 is a wasteful number, since it uses less digits than its factorization.

3665515042645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7258445735.

The product of its (nonzero) digits is 12960000, while the sum is 52.

The spelling of 3665515042645 in words is "three trillion, six hundred sixty-five billion, five hundred fifteen million, forty-two thousand, six hundred forty-five".