401423655097 has 2 divisors, whose sum is σ = 401423655098. Its totient is φ = 401423655096.

The previous prime is 401423655071. The next prime is 401423655121. The reversal of 401423655097 is 790556324104.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 336227182201 + 65196472896 = 579851^2 + 255336^2 .

It is a cyclic number.

It is not a de Polignac number, because 401423655097 - 2¹⁵ = 401423622329 is a prime.

It is a super-2 number, since 2×401423655097² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (401423650097) 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, 200711827548 + 200711827549.

It is an arithmetic number, because the mean of its divisors is an integer number (200711827549).

Almost surely, 2^401423655097 is an apocalyptic number.

It is an amenable number.

401423655097 is a deficient number, since it is larger than the sum of its proper divisors (1).

401423655097 is an equidigital number, since it uses as much as digits as its factorization.

401423655097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 907200, while the sum is 46.

The spelling of 401423655097 in words is "four hundred one billion, four hundred twenty-three million, six hundred fifty-five thousand, ninety-seven".