45438279793897 has 2 divisors, whose sum is σ = 45438279793898. Its totient is φ = 45438279793896.

The previous prime is 45438279793877. The next prime is 45438279793919. The reversal of 45438279793897 is 79839797283454.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40116819758656 + 5321460035241 = 6333784^2 + 2306829^2 .

It is a cyclic number.

It is not a de Polignac number, because 45438279793897 - 2³⁹ = 44888523980009 is a prime.

It is not a weakly prime, because it can be changed into another prime (45438279793847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22719139896948 + 22719139896949.

It is an arithmetic number, because the mean of its divisors is an integer number (22719139896949).

Almost surely, 2^{45438279793897} is an apocalyptic number.

It is an amenable number.

45438279793897 is a deficient number, since it is larger than the sum of its proper divisors (1).

45438279793897 is an equidigital number, since it uses as much as digits as its factorization.

45438279793897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23044331520, while the sum is 85.

The spelling of 45438279793897 in words is "forty-five trillion, four hundred thirty-eight billion, two hundred seventy-nine million, seven hundred ninety-three thousand, eight hundred ninety-seven".