1581038055607 has 2 divisors, whose sum is σ = 1581038055608. Its totient is φ = 1581038055606.

The previous prime is 1581038055523. The next prime is 1581038055629. The reversal of 1581038055607 is 7065508301851.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1581038055607 - 2¹⁹ = 1581037531319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1581038055637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 790519027803 + 790519027804.

It is an arithmetic number, because the mean of its divisors is an integer number (790519027804).

Almost surely, 2^{1581038055607} is an apocalyptic number.

1581038055607 is a deficient number, since it is larger than the sum of its proper divisors (1).

1581038055607 is an equidigital number, since it uses as much as digits as its factorization.

1581038055607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008000, while the sum is 49.

The spelling of 1581038055607 in words is "one trillion, five hundred eighty-one billion, thirty-eight million, fifty-five thousand, six hundred seven".