215054264405 has 16 divisors (see below), whose sum is σ = 271740967680. Its totient is φ = 162932409792.

The previous prime is 215054264389. The next prime is 215054264413. The reversal of 215054264405 is 504462450512.

It is a cyclic number.

It is not a de Polignac number, because 215054264405 - 2⁴ = 215054264389 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110909 + ... + 665138.

It is an arithmetic number, because the mean of its divisors is an integer number (16983810480).

Almost surely, 2^215054264405 is an apocalyptic number.

It is an amenable number.

215054264405 is a deficient number, since it is larger than the sum of its proper divisors (56686703275).

215054264405 is a wasteful number, since it uses less digits than its factorization.

215054264405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778988.

The product of its (nonzero) digits is 192000, while the sum is 38.

The spelling of 215054264405 in words is "two hundred fifteen billion, fifty-four million, two hundred sixty-four thousand, four hundred five".