400673653751611 has 2 divisors, whose sum is σ = 400673653751612. Its totient is φ = 400673653751610.

The previous prime is 400673653751513. The next prime is 400673653751633. The reversal of 400673653751611 is 116157356376004.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400673653751611 - 2¹¹ = 400673653749563 is a prime.

It is not a weakly prime, because it can be changed into another prime (400673653721611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200336826875805 + 200336826875806.

It is an arithmetic number, because the mean of its divisors is an integer number (200336826875806).

Almost surely, 2^{400673653751611} is an apocalyptic number.

400673653751611 is a deficient number, since it is larger than the sum of its proper divisors (1).

400673653751611 is an equidigital number, since it uses as much as digits as its factorization.

400673653751611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9525600, while the sum is 55.

The spelling of 400673653751611 in words is "four hundred trillion, six hundred seventy-three billion, six hundred fifty-three million, seven hundred fifty-one thousand, six hundred eleven".