1429934786681 has 2 divisors, whose sum is σ = 1429934786682. Its totient is φ = 1429934786680.

The previous prime is 1429934786641. The next prime is 1429934786719. The reversal of 1429934786681 is 1866874399241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1308633042025 + 121301744656 = 1143955^2 + 348284^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1429934786681 is a prime.

It is a super-2 number, since 2×1429934786681² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1429934786641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 714967393340 + 714967393341.

It is an arithmetic number, because the mean of its divisors is an integer number (714967393341).

Almost surely, 2^{1429934786681} is an apocalyptic number.

It is an amenable number.

1429934786681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1429934786681 is an equidigital number, since it uses as much as digits as its factorization.

1429934786681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 125411328, while the sum is 68.

The spelling of 1429934786681 in words is "one trillion, four hundred twenty-nine billion, nine hundred thirty-four million, seven hundred eighty-six thousand, six hundred eighty-one".