401501005441 has 2 divisors, whose sum is σ = 401501005442. Its totient is φ = 401501005440.

The previous prime is 401501005393. The next prime is 401501005471. The reversal of 401501005441 is 144500105104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 232826515441 + 168674490000 = 482521^2 + 410700^2 .

It is a cyclic number.

It is not a de Polignac number, because 401501005441 - 2⁷ = 401501005313 is a prime.

It is a super-2 number, since 2×401501005441² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (401501005471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200750502720 + 200750502721.

It is an arithmetic number, because the mean of its divisors is an integer number (200750502721).

Almost surely, 2^401501005441 is an apocalyptic number.

It is an amenable number.

401501005441 is a deficient number, since it is larger than the sum of its proper divisors (1).

401501005441 is an equidigital number, since it uses as much as digits as its factorization.

401501005441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1600, while the sum is 25.

The spelling of 401501005441 in words is "four hundred one billion, five hundred one million, five thousand, four hundred forty-one".