1406116526861 has 2 divisors, whose sum is σ = 1406116526862. Its totient is φ = 1406116526860.

The previous prime is 1406116526833. The next prime is 1406116526879. The reversal of 1406116526861 is 1686256116041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1378757382025 + 27359144836 = 1174205^2 + 165406^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1406116526861 is a prime.

It is a super-2 number, since 2×1406116526861² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1406116526821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 703058263430 + 703058263431.

It is an arithmetic number, because the mean of its divisors is an integer number (703058263431).

Almost surely, 2^{1406116526861} is an apocalyptic number.

It is an amenable number.

1406116526861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1406116526861 is an equidigital number, since it uses as much as digits as its factorization.

1406116526861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 414720, while the sum is 47.

The spelling of 1406116526861 in words is "one trillion, four hundred six billion, one hundred sixteen million, five hundred twenty-six thousand, eight hundred sixty-one".