45438279793919 has 2 divisors, whose sum is σ = 45438279793920. Its totient is φ = 45438279793918.

The previous prime is 45438279793897. The next prime is 45438279793927. The reversal of 45438279793919 is 91939797283454.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45438279793919 - 2²⁸ = 45438011358463 is a prime.

It is a super-2 number, since 2×45438279793919² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45438279790919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22719139896959 + 22719139896960.

It is an arithmetic number, because the mean of its divisors is an integer number (22719139896960).

Almost surely, 2^{45438279793919} is an apocalyptic number.

45438279793919 is a deficient number, since it is larger than the sum of its proper divisors (1).

45438279793919 is an equidigital number, since it uses as much as digits as its factorization.

45438279793919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3703553280, while the sum is 80.

The spelling of 45438279793919 in words is "forty-five trillion, four hundred thirty-eight billion, two hundred seventy-nine million, seven hundred ninety-three thousand, nine hundred nineteen".