47378566969 has 2 divisors, whose sum is σ = 47378566970. Its totient is φ = 47378566968.

The previous prime is 47378566943. The next prime is 47378566987. The reversal of 47378566969 is 96966587374.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30109190400 + 17269376569 = 173520^2 + 131413^2 .

It is a cyclic number.

It is not a de Polignac number, because 47378566969 - 2⁹ = 47378566457 is a prime.

It is a super-2 number, since 2×47378566969² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 47378566898 and 47378566907.

It is not a weakly prime, because it can be changed into another prime (47378566919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23689283484 + 23689283485.

It is an arithmetic number, because the mean of its divisors is an integer number (23689283485).

Almost surely, 2^47378566969 is an apocalyptic number.

It is an amenable number.

47378566969 is a deficient number, since it is larger than the sum of its proper divisors (1).

47378566969 is an equidigital number, since it uses as much as digits as its factorization.

47378566969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 411505920, while the sum is 70.

The spelling of 47378566969 in words is "forty-seven billion, three hundred seventy-eight million, five hundred sixty-six thousand, nine hundred sixty-nine".