1430836391681 has 4 divisors (see below), whose sum is σ = 1430861098500. Its totient is φ = 1430811684864.

The previous prime is 1430836391591. The next prime is 1430836391711. The reversal of 1430836391681 is 1861936380341.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1130428262656 + 300408129025 = 1063216^2 + 548095^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1430836391681 is a prime.

It is a super-2 number, since 2×1430836391681² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1430836391581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12266336 + ... + 12382433.

It is an arithmetic number, because the mean of its divisors is an integer number (357715274625).

Almost surely, 2^{1430836391681} is an apocalyptic number.

It is an amenable number.

1430836391681 is a deficient number, since it is larger than the sum of its proper divisors (24706819).

1430836391681 is an equidigital number, since it uses as much as digits as its factorization.

1430836391681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24706818.

The product of its (nonzero) digits is 2239488, while the sum is 53.

The spelling of 1430836391681 in words is "one trillion, four hundred thirty billion, eight hundred thirty-six million, three hundred ninety-one thousand, six hundred eighty-one".