45451321213 has 4 divisors (see below), whose sum is σ = 45809205760. Its totient is φ = 45093436668.

The previous prime is 45451321207. The next prime is 45451321229. The reversal of 45451321213 is 31212315454.

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 a de Polignac number, because none of the positive numbers 2^k-45451321213 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 (45451351213) 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, 178942083 + ... + 178942336.

It is an arithmetic number, because the mean of its divisors is an integer number (11452301440).

Almost surely, 2^45451321213 is an apocalyptic number.

It is an amenable number.

45451321213 is a deficient number, since it is larger than the sum of its proper divisors (357884547).

45451321213 is a wasteful number, since it uses less digits than its factorization.

45451321213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357884546.

The product of its digits is 14400, while the sum is 31.

Adding to 45451321213 its reverse (31212315454), we get a palindrome (76663636667).

The spelling of 45451321213 in words is "forty-five billion, four hundred fifty-one million, three hundred twenty-one thousand, two hundred thirteen".