45048964689821 has 2 divisors, whose sum is σ = 45048964689822. Its totient is φ = 45048964689820.

The previous prime is 45048964689803. The next prime is 45048964689823. The reversal of 45048964689821 is 12898646984054.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38509334836921 + 6539629852900 = 6205589^2 + 2557270^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45048964689821 is a prime.

Together with 45048964689823, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45048964689823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22524482344910 + 22524482344911.

It is an arithmetic number, because the mean of its divisors is an integer number (22524482344911).

Almost surely, 2^{45048964689821} is an apocalyptic number.

It is an amenable number.

45048964689821 is a deficient number, since it is larger than the sum of its proper divisors (1).

45048964689821 is an equidigital number, since it uses as much as digits as its factorization.

45048964689821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 955514880, while the sum is 74.

The spelling of 45048964689821 in words is "forty-five trillion, forty-eight billion, nine hundred sixty-four million, six hundred eighty-nine thousand, eight hundred twenty-one".