400255505115215 has 4 divisors (see below), whose sum is σ = 480306606138264. Its totient is φ = 320204404092168.

The previous prime is 400255505115149. The next prime is 400255505115269. The reversal of 400255505115215 is 512511505552004.

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 400255505115215 - 2²⁶ = 400255438006351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40025550511517 + ... + 40025550511526.

It is an arithmetic number, because the mean of its divisors is an integer number (120076651534566).

Almost surely, 2^{400255505115215} is an apocalyptic number.

400255505115215 is a deficient number, since it is larger than the sum of its proper divisors (80051101023049).

400255505115215 is an equidigital number, since it uses as much as digits as its factorization.

400255505115215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80051101023048.

The product of its (nonzero) digits is 250000, while the sum is 41.

The spelling of 400255505115215 in words is "four hundred trillion, two hundred fifty-five billion, five hundred five million, one hundred fifteen thousand, two hundred fifteen".