21160340331426 has 24 divisors (see below), whose sum is σ = 46112417954460. Its totient is φ = 7012675407456.

The previous prime is 21160340331401. The next prime is 21160340331469. The reversal of 21160340331426 is 62413304306112.

21160340331426 is a `hidden beast` number, since 2 + 1 + 1 + 603 + 4 + 0 + 3 + 3 + 1 + 42 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 18203491568025 + 2956848763401 = 4266555^2 + 1719549^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3397610941 + ... + 3397617168.

Almost surely, 2^{21160340331426} is an apocalyptic number.

21160340331426 is an abundant number, since it is smaller than the sum of its proper divisors (24952077623034).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21160340331426 is a wasteful number, since it uses less digits than its factorization.

21160340331426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6795228290 (or 6795228287 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

Adding to 21160340331426 its reverse (62413304306112), we get a palindrome (83573644637538).

The spelling of 21160340331426 in words is "twenty-one trillion, one hundred sixty billion, three hundred forty million, three hundred thirty-one thousand, four hundred twenty-six".