4540641514121 has 4 divisors (see below), whose sum is σ = 4540800068112. Its totient is φ = 4540482960132.

The previous prime is 4540641514091. The next prime is 4540641514163. The reversal of 4540641514121 is 1214151460454.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4540641514121 - 2¹⁸ = 4540641251977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4540641514621) 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, 79234031 + ... + 79291316.

It is an arithmetic number, because the mean of its divisors is an integer number (1135200017028).

Almost surely, 2^{4540641514121} is an apocalyptic number.

It is an amenable number.

4540641514121 is a deficient number, since it is larger than the sum of its proper divisors (158553991).

4540641514121 is a wasteful number, since it uses less digits than its factorization.

4540641514121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158553990.

The product of its (nonzero) digits is 76800, while the sum is 38.

Adding to 4540641514121 its reverse (1214151460454), we get a palindrome (5754792974575).

The spelling of 4540641514121 in words is "four trillion, five hundred forty billion, six hundred forty-one million, five hundred fourteen thousand, one hundred twenty-one".