215154140454411 has 8 divisors (see below), whose sum is σ = 303747021818064. Its totient is φ = 134998676363520.

The previous prime is 215154140454367. The next prime is 215154140454427. The reversal of 215154140454411 is 114454041451512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 215154140454411 - 2¹⁵ = 215154140421643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (215154140954411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2109354318130 + ... + 2109354318231.

It is an arithmetic number, because the mean of its divisors is an integer number (37968377727258).

Almost surely, 2^{215154140454411} is an apocalyptic number.

215154140454411 is a deficient number, since it is larger than the sum of its proper divisors (88592881363653).

215154140454411 is a wasteful number, since it uses less digits than its factorization.

215154140454411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4218708636381.

The product of its (nonzero) digits is 256000, while the sum is 42.

The spelling of 215154140454411 in words is "two hundred fifteen trillion, one hundred fifty-four billion, one hundred forty million, four hundred fifty-four thousand, four hundred eleven".