20290836303461 has 2 divisors, whose sum is σ = 20290836303462. Its totient is φ = 20290836303460.

The previous prime is 20290836303341. The next prime is 20290836303467. The reversal of 20290836303461 is 16430363809202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19241215563361 + 1049620740100 = 4386481^2 + 1024510^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20290836303461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20290836303467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10145418151730 + 10145418151731.

It is an arithmetic number, because the mean of its divisors is an integer number (10145418151731).

Almost surely, 2^{20290836303461} is an apocalyptic number.

It is an amenable number.

20290836303461 is a deficient number, since it is larger than the sum of its proper divisors (1).

20290836303461 is an equidigital number, since it uses as much as digits as its factorization.

20290836303461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1119744, while the sum is 47.

The spelling of 20290836303461 in words is "twenty trillion, two hundred ninety billion, eight hundred thirty-six million, three hundred three thousand, four hundred sixty-one".