401117977573 has 2 divisors, whose sum is σ = 401117977574. Its totient is φ = 401117977572.

The previous prime is 401117977553. The next prime is 401117977583. The reversal of 401117977573 is 375779711104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 400610511844 + 507465729 = 632938^2 + 22527^2 .

It is a cyclic number.

It is not a de Polignac number, because 401117977573 - 2⁹ = 401117977061 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 401117977573.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401117977553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200558988786 + 200558988787.

It is an arithmetic number, because the mean of its divisors is an integer number (200558988787).

Almost surely, 2^401117977573 is an apocalyptic number.

It is an amenable number.

401117977573 is a deficient number, since it is larger than the sum of its proper divisors (1).

401117977573 is an equidigital number, since it uses as much as digits as its factorization.

401117977573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296540, while the sum is 52.

The spelling of 401117977573 in words is "four hundred one billion, one hundred seventeen million, nine hundred seventy-seven thousand, five hundred seventy-three".