1266015061063 has 2 divisors, whose sum is σ = 1266015061064. Its totient is φ = 1266015061062.

The previous prime is 1266015061057. The next prime is 1266015061189. The reversal of 1266015061063 is 3601605106621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1266015061063 - 2²¹ = 1266012963911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1266015067063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 633007530531 + 633007530532.

It is an arithmetic number, because the mean of its divisors is an integer number (633007530532).

Almost surely, 2^{1266015061063} is an apocalyptic number.

1266015061063 is a deficient number, since it is larger than the sum of its proper divisors (1).

1266015061063 is an equidigital number, since it uses as much as digits as its factorization.

1266015061063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 1266015061063 in words is "one trillion, two hundred sixty-six billion, fifteen million, sixty-one thousand, sixty-three".