447925972041851 has 2 divisors, whose sum is σ = 447925972041852. Its totient is φ = 447925972041850.

The previous prime is 447925972041829. The next prime is 447925972041929. The reversal of 447925972041851 is 158140279529744.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-447925972041851 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (447925972341851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223962986020925 + 223962986020926.

It is an arithmetic number, because the mean of its divisors is an integer number (223962986020926).

Almost surely, 2^{447925972041851} is an apocalyptic number.

447925972041851 is a deficient number, since it is larger than the sum of its proper divisors (1).

447925972041851 is an equidigital number, since it uses as much as digits as its factorization.

447925972041851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 203212800, while the sum is 68.

The spelling of 447925972041851 in words is "four hundred forty-seven trillion, nine hundred twenty-five billion, nine hundred seventy-two million, forty-one thousand, eight hundred fifty-one".