401338990057 has 2 divisors, whose sum is σ = 401338990058. Its totient is φ = 401338990056.

The previous prime is 401338990043. The next prime is 401338990237. The reversal of 401338990057 is 750099833104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 255667764496 + 145671225561 = 505636^2 + 381669^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401338990057 is a prime.

It is a super-2 number, since 2×401338990057² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (401338990037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200669495028 + 200669495029.

It is an arithmetic number, because the mean of its divisors is an integer number (200669495029).

Almost surely, 2^401338990057 is an apocalyptic number.

It is an amenable number.

401338990057 is a deficient number, since it is larger than the sum of its proper divisors (1).

401338990057 is an equidigital number, since it uses as much as digits as its factorization.

401338990057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 816480, while the sum is 49.

The spelling of 401338990057 in words is "four hundred one billion, three hundred thirty-eight million, nine hundred ninety thousand, fifty-seven".