3965556042075 has 192 divisors, whose sum is σ = 7259055390720. Its totient is φ = 1902071808000.

The previous prime is 3965556042059. The next prime is 3965556042083. The reversal of 3965556042075 is 5702406555693.

It is a happy number.

It is not a de Polignac number, because 3965556042075 - 2⁴ = 3965556042059 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 524471295 + ... + 524478855.

It is an arithmetic number, because the mean of its divisors is an integer number (37807580160).

Almost surely, 2^{3965556042075} is an apocalyptic number.

3965556042075 is a deficient number, since it is larger than the sum of its proper divisors (3293499348645).

3965556042075 is a wasteful number, since it uses less digits than its factorization.

3965556042075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7838 (or 7833 counting only the distinct ones).

The product of its (nonzero) digits is 34020000, while the sum is 57.

The spelling of 3965556042075 in words is "three trillion, nine hundred sixty-five billion, five hundred fifty-six million, forty-two thousand, seventy-five".