1262811253106 has 32 divisors (see below), whose sum is σ = 2089845536688. Its totient is φ = 568575452160.

The previous prime is 1262811253103. The next prime is 1262811253129. The reversal of 1262811253106 is 6013521182621.

It can be written as a sum of positive squares in 8 ways, for example, as 106951891225 + 1155859361881 = 327035^2 + 1075109^2 .

It is a super-2 number, since 2×1262811253106² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1262811253106.

It is not an unprimeable number, because it can be changed into a prime (1262811253103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16007150 + ... + 16085846.

Almost surely, 2^{1262811253106} is an apocalyptic number.

1262811253106 is a deficient number, since it is larger than the sum of its proper divisors (827034283582).

1262811253106 is a wasteful number, since it uses less digits than its factorization.

1262811253106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93806.

The product of its (nonzero) digits is 34560, while the sum is 38.

The spelling of 1262811253106 in words is "one trillion, two hundred sixty-two billion, eight hundred eleven million, two hundred fifty-three thousand, one hundred six".