400030511215 has 16 divisors (see below), whose sum is σ = 491037622272. Its totient is φ = 312765624864.

The previous prime is 400030511201. The next prime is 400030511219. The reversal of 400030511215 is 512115030004.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 400030511215 - 2⁷ = 400030511087 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 (400030511219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4658719 + ... + 4743808.

It is an arithmetic number, because the mean of its divisors is an integer number (30689851392).

Almost surely, 2^400030511215 is an apocalyptic number.

400030511215 is a deficient number, since it is larger than the sum of its proper divisors (91007111057).

400030511215 is a wasteful number, since it uses less digits than its factorization.

400030511215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9402726.

The product of its (nonzero) digits is 600, while the sum is 22.

Adding to 400030511215 its reverse (512115030004), we get a palindrome (912145541219).

The spelling of 400030511215 in words is "four hundred billion, thirty million, five hundred eleven thousand, two hundred fifteen".