7371636121 has 4 divisors (see below), whose sum is σ = 7625830500. Its totient is φ = 7117441744.

The previous prime is 7371636047. The next prime is 7371636143. The reversal of 7371636121 is 1216361737.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1216361737 = 5623 ⋅216319.

It can be written as a sum of positive squares in 2 ways, for example, as 2406883600 + 4964752521 = 49060^2 + 70461^2 .

It is a cyclic number.

It is not a de Polignac number, because 7371636121 - 2¹³ = 7371627929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7371636191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127097146 + ... + 127097203.

It is an arithmetic number, because the mean of its divisors is an integer number (1906457625).

Almost surely, 2^7371636121 is an apocalyptic number.

It is an amenable number.

7371636121 is a deficient number, since it is larger than the sum of its proper divisors (254194379).

7371636121 is a wasteful number, since it uses less digits than its factorization.

7371636121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254194378.

The product of its digits is 31752, while the sum is 37.

The square root of 7371636121 is about 85858.2326920372. The cubic root of 7371636121 is about 1946.2022178701.

Adding to 7371636121 its reverse (1216361737), we get a palindrome (8587997858).

The spelling of 7371636121 in words is "seven billion, three hundred seventy-one million, six hundred thirty-six thousand, one hundred twenty-one".