3672135121 has 4 divisors (see below), whose sum is σ = 3798760500. Its totient is φ = 3545509744.

The previous prime is 3672135109. The next prime is 3672135197. The reversal of 3672135121 is 1215312763.

It is a happy number.

3672135121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1215312763 = 7 ⋅173616109.

It can be written as a sum of positive squares in 2 ways, for example, as 2611721025 + 1060414096 = 51105^2 + 32564^2 .

It is a cyclic number.

It is not a de Polignac number, because 3672135121 - 2⁷ = 3672134993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3672138121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63312646 + ... + 63312703.

It is an arithmetic number, because the mean of its divisors is an integer number (949690125).

Almost surely, 2^3672135121 is an apocalyptic number.

It is an amenable number.

3672135121 is a deficient number, since it is larger than the sum of its proper divisors (126625379).

3672135121 is a wasteful number, since it uses less digits than its factorization.

3672135121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126625378.

The product of its digits is 7560, while the sum is 31.

The square root of 3672135121 is about 60598.1445343007. The cubic root of 3672135121 is about 1542.7878775909.

Adding to 3672135121 its reverse (1215312763), we get a palindrome (4887447884).

The spelling of 3672135121 in words is "three billion, six hundred seventy-two million, one hundred thirty-five thousand, one hundred twenty-one".