4541255642221 has 4 divisors (see below), whose sum is σ = 4687747759744. Its totient is φ = 4394763524700.

The previous prime is 4541255642191. The next prime is 4541255642243. The reversal of 4541255642221 is 1222465521454.

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 4541255642221 - 2²¹ = 4541253545069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4541255642821) 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, 73246058715 + ... + 73246058776.

It is an arithmetic number, because the mean of its divisors is an integer number (1171936939936).

Almost surely, 2^{4541255642221} is an apocalyptic number.

It is an amenable number.

4541255642221 is a deficient number, since it is larger than the sum of its proper divisors (146492117523).

4541255642221 is a wasteful number, since it uses less digits than its factorization.

4541255642221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146492117522.

The product of its digits is 768000, while the sum is 43.

The spelling of 4541255642221 in words is "four trillion, five hundred forty-one billion, two hundred fifty-five million, six hundred forty-two thousand, two hundred twenty-one".