1263876250099 has 2 divisors, whose sum is σ = 1263876250100. Its totient is φ = 1263876250098.

The previous prime is 1263876250079. The next prime is 1263876250157. The reversal of 1263876250099 is 9900526783621.

It is an a-pointer prime, because the next prime (1263876250157) can be obtained adding 1263876250099 to its sum of digits (58).

It is a weak prime.

It is an emirp because it is prime and its reverse (9900526783621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1263876250099 - 2¹³ = 1263876241907 is a prime.

It is not a weakly prime, because it can be changed into another prime (1263876250069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631938125049 + 631938125050.

It is an arithmetic number, because the mean of its divisors is an integer number (631938125050).

Almost surely, 2^{1263876250099} is an apocalyptic number.

1263876250099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1263876250099 is an equidigital number, since it uses as much as digits as its factorization.

1263876250099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9797760, while the sum is 58.

The spelling of 1263876250099 in words is "one trillion, two hundred sixty-three billion, eight hundred seventy-six million, two hundred fifty thousand, ninety-nine".