215154140454399 has 8 divisors (see below), whose sum is σ = 296764331661360. Its totient is φ = 138490021441856.

The previous prime is 215154140454367. The next prime is 215154140454427. The reversal of 215154140454399 is 993454041451512.

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

It is a cyclic number.

It is not a de Polignac number, because 215154140454399 - 2⁵ = 215154140454367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215154140454349) 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, 1236518048502 + ... + 1236518048675.

It is an arithmetic number, because the mean of its divisors is an integer number (37095541457670).

Almost surely, 2^{215154140454399} is an apocalyptic number.

215154140454399 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

215154140454399 is a deficient number, since it is larger than the sum of its proper divisors (81610191206961).

215154140454399 is a wasteful number, since it uses less digits than its factorization.

215154140454399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2473036097209.

The product of its (nonzero) digits is 15552000, while the sum is 57.

The spelling of 215154140454399 in words is "two hundred fifteen trillion, one hundred fifty-four billion, one hundred forty million, four hundred fifty-four thousand, three hundred ninety-nine".