400000505453531 has 4 divisors (see below), whose sum is σ = 401423994797064. Its totient is φ = 398577016110000.

The previous prime is 400000505453519. The next prime is 400000505453533. The reversal of 400000505453531 is 135354505000004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 400000505453531 - 2⁴⁶ = 329631761275867 is a prime.

It is a super-2 number, since 2×400000505453531² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 400000505453491 and 400000505453500.

It is not an unprimeable number, because it can be changed into a prime (400000505453533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 711744671345 + ... + 711744671906.

It is an arithmetic number, because the mean of its divisors is an integer number (100355998699266).

Almost surely, 2^{400000505453531} is an apocalyptic number.

400000505453531 is a deficient number, since it is larger than the sum of its proper divisors (1423489343533).

400000505453531 is a wasteful number, since it uses less digits than its factorization.

400000505453531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423489343532.

The product of its (nonzero) digits is 90000, while the sum is 35.

The spelling of 400000505453531 in words is "four hundred trillion, five hundred five million, four hundred fifty-three thousand, five hundred thirty-one".