401117977553 has 2 divisors, whose sum is σ = 401117977554. Its totient is φ = 401117977552.

The previous prime is 401117977549. The next prime is 401117977573. The reversal of 401117977553 is 355779711104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 393822767809 + 7295209744 = 627553^2 + 85412^2 .

It is a cyclic number.

It is not a de Polignac number, because 401117977553 - 2² = 401117977549 is a prime.

It is not a weakly prime, because it can be changed into another prime (401117977573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200558988776 + 200558988777.

It is an arithmetic number, because the mean of its divisors is an integer number (200558988777).

Almost surely, 2^401117977553 is an apocalyptic number.

It is an amenable number.

401117977553 is a deficient number, since it is larger than the sum of its proper divisors (1).

401117977553 is an equidigital number, since it uses as much as digits as its factorization.

401117977553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 926100, while the sum is 50.

The spelling of 401117977553 in words is "four hundred one billion, one hundred seventeen million, nine hundred seventy-seven thousand, five hundred fifty-three".