401499141691 has 2 divisors, whose sum is σ = 401499141692. Its totient is φ = 401499141690.

The previous prime is 401499141671. The next prime is 401499141721. The reversal of 401499141691 is 196141994104.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 401499141691 - 2¹³ = 401499133499 is a prime.

It is a super-2 number, since 2×401499141691² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (401499141671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200749570845 + 200749570846.

It is an arithmetic number, because the mean of its divisors is an integer number (200749570846).

Almost surely, 2^401499141691 is an apocalyptic number.

401499141691 is a deficient number, since it is larger than the sum of its proper divisors (1).

401499141691 is an equidigital number, since it uses as much as digits as its factorization.

401499141691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 279936, while the sum is 49.

The spelling of 401499141691 in words is "four hundred one billion, four hundred ninety-nine million, one hundred forty-one thousand, six hundred ninety-one".