3665172051 has 8 divisors (see below), whose sum is σ = 5429884560. Its totient is φ = 2443448016.

The previous prime is 3665172013. The next prime is 3665172053. The reversal of 3665172051 is 1502715663.

It is not a de Polignac number, because 3665172051 - 2⁶ = 3665171987 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3665171997 and 3665172015.

It is not an unprimeable number, because it can be changed into a prime (3665172053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67873530 + ... + 67873583.

It is an arithmetic number, because the mean of its divisors is an integer number (678735570).

Almost surely, 2^3665172051 is an apocalyptic number.

3665172051 is a deficient number, since it is larger than the sum of its proper divisors (1764712509).

3665172051 is a wasteful number, since it uses less digits than its factorization.

3665172051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135747122 (or 135747116 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 3665172051 is about 60540.6644413488. The cubic root of 3665172051 is about 1541.8121203667.

The spelling of 3665172051 in words is "three billion, six hundred sixty-five million, one hundred seventy-two thousand, fifty-one".