405215212115 has 16 divisors (see below), whose sum is σ = 556096010688. Its totient is φ = 277675714176.

The previous prime is 405215212111. The next prime is 405215212117. The reversal of 405215212115 is 511212512504.

It is not a de Polignac number, because 405215212115 - 2² = 405215212111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (405215212111) 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, 3825032 + ... + 3929541.

It is an arithmetic number, because the mean of its divisors is an integer number (34756000668).

Almost surely, 2^405215212115 is an apocalyptic number.

405215212115 is a deficient number, since it is larger than the sum of its proper divisors (150880798573).

405215212115 is a wasteful number, since it uses less digits than its factorization.

405215212115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7756078.

The product of its (nonzero) digits is 4000, while the sum is 29.

Adding to 405215212115 its reverse (511212512504), we get a palindrome (916427724619).

The spelling of 405215212115 in words is "four hundred five billion, two hundred fifteen million, two hundred twelve thousand, one hundred fifteen".