47354381878469 has 2 divisors, whose sum is σ = 47354381878470. Its totient is φ = 47354381878468.

The previous prime is 47354381878369. The next prime is 47354381878493. The reversal of 47354381878469 is 96487818345374.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40201458373444 + 7152923505025 = 6340462^2 + 2674495^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47354381878469 is a prime.

It is a super-2 number, since 2×47354381878469² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 47354381878469.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47354381878369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23677190939234 + 23677190939235.

It is an arithmetic number, because the mean of its divisors is an integer number (23677190939235).

Almost surely, 2^{47354381878469} is an apocalyptic number.

It is an amenable number.

47354381878469 is a deficient number, since it is larger than the sum of its proper divisors (1).

47354381878469 is an equidigital number, since it uses as much as digits as its factorization.

47354381878469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3901685760, while the sum is 77.

The spelling of 47354381878469 in words is "forty-seven trillion, three hundred fifty-four billion, three hundred eighty-one million, eight hundred seventy-eight thousand, four hundred sixty-nine".