1085345624621 has 2 divisors, whose sum is σ = 1085345624622. Its totient is φ = 1085345624620.

The previous prime is 1085345624593. The next prime is 1085345624729. The reversal of 1085345624621 is 1264265435801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1084659760900 + 685863721 = 1041470^2 + 26189^2 .

It is an emirp because it is prime and its reverse (1264265435801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1085345624621 - 2⁶ = 1085345624557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1085345624521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 542672812310 + 542672812311.

It is an arithmetic number, because the mean of its divisors is an integer number (542672812311).

Almost surely, 2^{1085345624621} is an apocalyptic number.

It is an amenable number.

1085345624621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1085345624621 is an equidigital number, since it uses as much as digits as its factorization.

1085345624621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1382400, while the sum is 47.

The spelling of 1085345624621 in words is "one trillion, eighty-five billion, three hundred forty-five million, six hundred twenty-four thousand, six hundred twenty-one".