1201605208451 has 2 divisors, whose sum is σ = 1201605208452. Its totient is φ = 1201605208450.

The previous prime is 1201605208409. The next prime is 1201605208477. The reversal of 1201605208451 is 1548025061021.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201605208451 is a prime.

It is not a weakly prime, because it can be changed into another prime (1201605208481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600802604225 + 600802604226.

It is an arithmetic number, because the mean of its divisors is an integer number (600802604226).

Almost surely, 2^{1201605208451} is an apocalyptic number.

1201605208451 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201605208451 is an equidigital number, since it uses as much as digits as its factorization.

1201605208451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19200, while the sum is 35.

The spelling of 1201605208451 in words is "one trillion, two hundred one billion, six hundred five million, two hundred eight thousand, four hundred fifty-one".