400520153461 has 2 divisors, whose sum is σ = 400520153462. Its totient is φ = 400520153460.

The previous prime is 400520153393. The next prime is 400520153479. The reversal of 400520153461 is 164351025004.

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., 292025675236 + 108494478225 = 540394^2 + 329385^2 .

It is a cyclic number.

It is not a de Polignac number, because 400520153461 - 2³¹ = 398372669813 is a prime.

It is a super-3 number, since 3×400520153461³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400520153161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200260076730 + 200260076731.

It is an arithmetic number, because the mean of its divisors is an integer number (200260076731).

Almost surely, 2^400520153461 is an apocalyptic number.

It is an amenable number.

400520153461 is a deficient number, since it is larger than the sum of its proper divisors (1).

400520153461 is an equidigital number, since it uses as much as digits as its factorization.

400520153461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 400520153461 its reverse (164351025004), we get a palindrome (564871178465).

The spelling of 400520153461 in words is "four hundred billion, five hundred twenty million, one hundred fifty-three thousand, four hundred sixty-one".