74547827969 has 2 divisors, whose sum is σ = 74547827970. Its totient is φ = 74547827968.

The previous prime is 74547827941. The next prime is 74547828023. The reversal of 74547827969 is 96972874547.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66615610000 + 7932217969 = 258100^2 + 89063^2 .

It is a cyclic number.

It is not a de Polignac number, because 74547827969 - 2⁸ = 74547827713 is a prime.

It is a super-4 number, since 4×74547827969⁴ (a number of 45 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 74547827899 and 74547827908.

It is not a weakly prime, because it can be changed into another prime (74547827909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37273913984 + 37273913985.

It is an arithmetic number, because the mean of its divisors is an integer number (37273913985).

Almost surely, 2^74547827969 is an apocalyptic number.

It is an amenable number.

74547827969 is a deficient number, since it is larger than the sum of its proper divisors (1).

74547827969 is an equidigital number, since it uses as much as digits as its factorization.

74547827969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 213373440, while the sum is 68.

The spelling of 74547827969 in words is "seventy-four billion, five hundred forty-seven million, eight hundred twenty-seven thousand, nine hundred sixty-nine".