1276010001881 has 2 divisors, whose sum is σ = 1276010001882. Its totient is φ = 1276010001880.

The previous prime is 1276010001863. The next prime is 1276010001961. The reversal of 1276010001881 is 1881000106721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1267200490000 + 8809511881 = 1125700^2 + 93859^2 .

It is a cyclic number.

It is not a de Polignac number, because 1276010001881 - 2⁶ = 1276010001817 is a prime.

It is a super-2 number, since 2×1276010001881² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1276010006881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 638005000940 + 638005000941.

It is an arithmetic number, because the mean of its divisors is an integer number (638005000941).

Almost surely, 2^{1276010001881} is an apocalyptic number.

It is an amenable number.

1276010001881 is a deficient number, since it is larger than the sum of its proper divisors (1).

1276010001881 is an equidigital number, since it uses as much as digits as its factorization.

1276010001881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 35.

The spelling of 1276010001881 in words is "one trillion, two hundred seventy-six billion, ten million, one thousand, eight hundred eighty-one".