1606501040257 has 2 divisors, whose sum is σ = 1606501040258. Its totient is φ = 1606501040256.

The previous prime is 1606501040233. The next prime is 1606501040267. The reversal of 1606501040257 is 7520401056061.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1517353412481 + 89147627776 = 1231809^2 + 298576^2 .

It is a cyclic number.

It is not a de Polignac number, because 1606501040257 - 2⁷ = 1606501040129 is a prime.

It is not a weakly prime, because it can be changed into another prime (1606501040267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 803250520128 + 803250520129.

It is an arithmetic number, because the mean of its divisors is an integer number (803250520129).

Almost surely, 2^{1606501040257} is an apocalyptic number.

It is an amenable number.

1606501040257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1606501040257 is an equidigital number, since it uses as much as digits as its factorization.

1606501040257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50400, while the sum is 37.

The spelling of 1606501040257 in words is "one trillion, six hundred six billion, five hundred one million, forty thousand, two hundred fifty-seven".