1031863668877 has 2 divisors, whose sum is σ = 1031863668878. Its totient is φ = 1031863668876.

The previous prime is 1031863668863. The next prime is 1031863668929. The reversal of 1031863668877 is 7788663681301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 971527606921 + 60336061956 = 985661^2 + 245634^2 .

It is a cyclic number.

It is not a de Polignac number, because 1031863668877 - 2¹¹ = 1031863666829 is a prime.

It is a super-2 number, since 2×1031863668877² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1031863668817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515931834438 + 515931834439.

It is an arithmetic number, because the mean of its divisors is an integer number (515931834439).

Almost surely, 2^{1031863668877} is an apocalyptic number.

It is an amenable number.

1031863668877 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031863668877 is an equidigital number, since it uses as much as digits as its factorization.

1031863668877 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48771072, while the sum is 64.

The spelling of 1031863668877 in words is "one trillion, thirty-one billion, eight hundred sixty-three million, six hundred sixty-eight thousand, eight hundred seventy-seven".