1421155520683 has 2 divisors, whose sum is σ = 1421155520684. Its totient is φ = 1421155520682.

The previous prime is 1421155520647. The next prime is 1421155520717. The reversal of 1421155520683 is 3860255511241.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1421155520683 is a prime.

It is not a weakly prime, because it can be changed into another prime (1421150520683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710577760341 + 710577760342.

It is an arithmetic number, because the mean of its divisors is an integer number (710577760342).

Almost surely, 2^{1421155520683} is an apocalyptic number.

1421155520683 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421155520683 is an equidigital number, since it uses as much as digits as its factorization.

1421155520683 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288000, while the sum is 43.

The spelling of 1421155520683 in words is "one trillion, four hundred twenty-one billion, one hundred fifty-five million, five hundred twenty thousand, six hundred eighty-three".