401338990043 has 2 divisors, whose sum is σ = 401338990044. Its totient is φ = 401338990042.

The previous prime is 401338990037. The next prime is 401338990057. The reversal of 401338990043 is 340099833104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 401338990043 - 2⁸ = 401338989787 is a prime.

It is a super-2 number, since 2×401338990043² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 401338989976 and 401338990003.

It is not a weakly prime, because it can be changed into another prime (401338990033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200669495021 + 200669495022.

It is an arithmetic number, because the mean of its divisors is an integer number (200669495022).

Almost surely, 2^401338990043 is an apocalyptic number.

401338990043 is a deficient number, since it is larger than the sum of its proper divisors (1).

401338990043 is an equidigital number, since it uses as much as digits as its factorization.

401338990043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 44.

The spelling of 401338990043 in words is "four hundred one billion, three hundred thirty-eight million, nine hundred ninety thousand, forty-three".