3135216645 has 128 divisors (see below), whose sum is σ = 6394798080. Its totient is φ = 1443536640.

The previous prime is 3135216569. The next prime is 3135216647. The reversal of 3135216645 is 5466125313.

3135216645 is a `hidden beast` number, since 3 + 1 + 3 + 5 + 2 + 1 + 6 + 645 = 666.

It is not a de Polignac number, because 3135216645 - 2⁸ = 3135216389 is a prime.

It is a super-2 number, since 2×3135216645² = 19659166822170112050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3135216647) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2361972 + ... + 2363298.

It is an arithmetic number, because the mean of its divisors is an integer number (49959360).

Almost surely, 2^3135216645 is an apocalyptic number.

It is an amenable number.

3135216645 is an abundant number, since it is smaller than the sum of its proper divisors (3259581435).

3135216645 is a wasteful number, since it uses less digits than its factorization.

3135216645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1432 (or 1426 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 3135216645 is about 55993.0053220936. The cubic root of 3135216645 is about 1463.6003973536.

The spelling of 3135216645 in words is "three billion, one hundred thirty-five million, two hundred sixteen thousand, six hundred forty-five".