400530355541 has 4 divisors (see below), whose sum is σ = 400576238784. Its totient is φ = 400484472300.

The previous prime is 400530355481. The next prime is 400530355543. The reversal of 400530355541 is 145553035004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 400530355541 - 2²² = 400526161237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400530355543) 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 in 3 ways as a sum of consecutive naturals, for example, 22928525 + ... + 22945986.

It is an arithmetic number, because the mean of its divisors is an integer number (100144059696).

Almost surely, 2^400530355541 is an apocalyptic number.

It is an amenable number.

400530355541 is a deficient number, since it is larger than the sum of its proper divisors (45883243).

400530355541 is an equidigital number, since it uses as much as digits as its factorization.

400530355541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45883242.

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

The spelling of 400530355541 in words is "four hundred billion, five hundred thirty million, three hundred fifty-five thousand, five hundred forty-one".