2047121641 has 2 divisors, whose sum is σ = 2047121642. Its totient is φ = 2047121640.

The previous prime is 2047121633. The next prime is 2047121651. The reversal of 2047121641 is 1461217402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2034010000 + 13111641 = 45100^2 + 3621^2 .

It is a cyclic number.

It is not a de Polignac number, because 2047121641 - 2³ = 2047121633 is a prime.

It is not a weakly prime, because it can be changed into another prime (2047121621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1023560820 + 1023560821.

It is an arithmetic number, because the mean of its divisors is an integer number (1023560821).

Almost surely, 2^2047121641 is an apocalyptic number.

It is an amenable number.

2047121641 is a deficient number, since it is larger than the sum of its proper divisors (1).

2047121641 is an equidigital number, since it uses as much as digits as its factorization.

2047121641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 2047121641 is about 45245.1283675933. The cubic root of 2047121641 is about 1269.7392650926.

The spelling of 2047121641 in words is "two billion, forty-seven million, one hundred twenty-one thousand, six hundred forty-one".