3867572851973 has 2 divisors, whose sum is σ = 3867572851974. Its totient is φ = 3867572851972.

The previous prime is 3867572851969. The next prime is 3867572851981. The reversal of 3867572851973 is 3791582757683.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3853455372484 + 14117479489 = 1963022^2 + 118817^2 .

It is a cyclic number.

It is not a de Polignac number, because 3867572851973 - 2² = 3867572851969 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3867572851897 and 3867572851906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3867572151973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1933786425986 + 1933786425987.

It is an arithmetic number, because the mean of its divisors is an integer number (1933786425987).

Almost surely, 2^{3867572851973} is an apocalyptic number.

It is an amenable number.

3867572851973 is a deficient number, since it is larger than the sum of its proper divisors (1).

3867572851973 is an equidigital number, since it uses as much as digits as its factorization.

3867572851973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 533433600, while the sum is 71.

The spelling of 3867572851973 in words is "three trillion, eight hundred sixty-seven billion, five hundred seventy-two million, eight hundred fifty-one thousand, nine hundred seventy-three".