1206858871511 has 2 divisors, whose sum is σ = 1206858871512. Its totient is φ = 1206858871510.

The previous prime is 1206858871441. The next prime is 1206858871523. The reversal of 1206858871511 is 1151788586021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1206858871511 - 2¹⁴ = 1206858855127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1206858871531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 603429435755 + 603429435756.

It is an arithmetic number, because the mean of its divisors is an integer number (603429435756).

Almost surely, 2^{1206858871511} is an apocalyptic number.

1206858871511 is a deficient number, since it is larger than the sum of its proper divisors (1).

1206858871511 is an equidigital number, since it uses as much as digits as its factorization.

1206858871511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1075200, while the sum is 53.

The spelling of 1206858871511 in words is "one trillion, two hundred six billion, eight hundred fifty-eight million, eight hundred seventy-one thousand, five hundred eleven".