46438242547681 has 2 divisors, whose sum is σ = 46438242547682. Its totient is φ = 46438242547680.

The previous prime is 46438242547657. The next prime is 46438242547721. The reversal of 46438242547681 is 18674524283464.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27581665830625 + 18856576717056 = 5251825^2 + 4342416^2 .

It is a cyclic number.

It is not a de Polignac number, because 46438242547681 - 2²⁷ = 46438108329953 is a prime.

It is a super-2 number, since 2×46438242547681² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (46438242547381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23219121273840 + 23219121273841.

It is an arithmetic number, because the mean of its divisors is an integer number (23219121273841).

Almost surely, 2^{46438242547681} is an apocalyptic number.

It is an amenable number.

46438242547681 is a deficient number, since it is larger than the sum of its proper divisors (1).

46438242547681 is an equidigital number, since it uses as much as digits as its factorization.

46438242547681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 247726080, while the sum is 64.

The spelling of 46438242547681 in words is "forty-six trillion, four hundred thirty-eight billion, two hundred forty-two million, five hundred forty-seven thousand, six hundred eighty-one".