1566061605131 has 2 divisors, whose sum is σ = 1566061605132. Its totient is φ = 1566061605130.

The previous prime is 1566061605091. The next prime is 1566061605149. The reversal of 1566061605131 is 1315061606651.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1566061605131 - 2¹⁴ = 1566061588747 is a prime.

It is a super-2 number, since 2×1566061605131² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1566061605151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 783030802565 + 783030802566.

It is an arithmetic number, because the mean of its divisors is an integer number (783030802566).

Almost surely, 2^{1566061605131} is an apocalyptic number.

1566061605131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1566061605131 is an equidigital number, since it uses as much as digits as its factorization.

1566061605131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97200, while the sum is 41.

The spelling of 1566061605131 in words is "one trillion, five hundred sixty-six billion, sixty-one million, six hundred five thousand, one hundred thirty-one".