43687950401 has 2 divisors, whose sum is σ = 43687950402. Its totient is φ = 43687950400.

The previous prime is 43687950311. The next prime is 43687950437. The reversal of 43687950401 is 10405978634.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40852494400 + 2835456001 = 202120^2 + 53249^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43687950401 is a prime.

It is not a weakly prime, because it can be changed into another prime (43687950101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21843975200 + 21843975201.

It is an arithmetic number, because the mean of its divisors is an integer number (21843975201).

Almost surely, 2^43687950401 is an apocalyptic number.

It is an amenable number.

43687950401 is a deficient number, since it is larger than the sum of its proper divisors (1).

43687950401 is an equidigital number, since it uses as much as digits as its factorization.

43687950401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 43687950401 in words is "forty-three billion, six hundred eighty-seven million, nine hundred fifty thousand, four hundred one".