1020305303551 has 2 divisors, whose sum is σ = 1020305303552. Its totient is φ = 1020305303550.

The previous prime is 1020305303533. The next prime is 1020305303599. The reversal of 1020305303551 is 1553035030201.

It is a weak prime.

It is an emirp because it is prime and its reverse (1553035030201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1020305303551 - 2²³ = 1020296914943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020305306551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510152651775 + 510152651776.

It is an arithmetic number, because the mean of its divisors is an integer number (510152651776).

Almost surely, 2^{1020305303551} is an apocalyptic number.

1020305303551 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020305303551 is an equidigital number, since it uses as much as digits as its factorization.

1020305303551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6750, while the sum is 28.

The spelling of 1020305303551 in words is "one trillion, twenty billion, three hundred five million, three hundred three thousand, five hundred fifty-one".