401244014212991 has 2 divisors, whose sum is σ = 401244014212992. Its totient is φ = 401244014212990.

The previous prime is 401244014212973. The next prime is 401244014213033. The reversal of 401244014212991 is 199212410442104.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401244014212991 is a prime.

It is a super-2 number, since 2×401244014212991² (a number of 30 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401244014212901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200622007106495 + 200622007106496.

It is an arithmetic number, because the mean of its divisors is an integer number (200622007106496).

Almost surely, 2^{401244014212991} is an apocalyptic number.

401244014212991 is a deficient number, since it is larger than the sum of its proper divisors (1).

401244014212991 is an equidigital number, since it uses as much as digits as its factorization.

401244014212991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 44.

The spelling of 401244014212991 in words is "four hundred one trillion, two hundred forty-four billion, fourteen million, two hundred twelve thousand, nine hundred ninety-one".