2721856692041 has 2 divisors, whose sum is σ = 2721856692042. Its totient is φ = 2721856692040.

The previous prime is 2721856691971. The next prime is 2721856692073. The reversal of 2721856692041 is 1402966581272.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2128681000000 + 593175692041 = 1459000^2 + 770179^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2721856692041 is a prime.

It is a super-2 number, since 2×2721856692041² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2721856692091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1360928346020 + 1360928346021.

It is an arithmetic number, because the mean of its divisors is an integer number (1360928346021).

Almost surely, 2^{2721856692041} is an apocalyptic number.

It is an amenable number.

2721856692041 is a deficient number, since it is larger than the sum of its proper divisors (1).

2721856692041 is an equidigital number, since it uses as much as digits as its factorization.

2721856692041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2903040, while the sum is 53.

The spelling of 2721856692041 in words is "two trillion, seven hundred twenty-one billion, eight hundred fifty-six million, six hundred ninety-two thousand, forty-one".