1728620977051 has 2 divisors, whose sum is σ = 1728620977052. Its totient is φ = 1728620977050.

The previous prime is 1728620976959. The next prime is 1728620977063. The reversal of 1728620977051 is 1507790268271.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1728620977051 - 2⁹ = 1728620976539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1728620976983 and 1728620977001.

It is not a weakly prime, because it can be changed into another prime (1728620977081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 864310488525 + 864310488526.

It is an arithmetic number, because the mean of its divisors is an integer number (864310488526).

Almost surely, 2^{1728620977051} is an apocalyptic number.

1728620977051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1728620977051 is an equidigital number, since it uses as much as digits as its factorization.

1728620977051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2963520, while the sum is 55.

The spelling of 1728620977051 in words is "one trillion, seven hundred twenty-eight billion, six hundred twenty million, nine hundred seventy-seven thousand, fifty-one".