215115130455 has 8 divisors (see below), whose sum is σ = 344184208752. Its totient is φ = 114728069568.

The previous prime is 215115130423. The next prime is 215115130481. The reversal of 215115130455 is 554031511512.

It is a happy number.

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

It is not a de Polignac number, because 215115130455 - 2⁵ = 215115130423 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7170504334 + ... + 7170504363.

It is an arithmetic number, because the mean of its divisors is an integer number (43023026094).

Almost surely, 2^215115130455 is an apocalyptic number.

215115130455 is a deficient number, since it is larger than the sum of its proper divisors (129069078297).

215115130455 is a wasteful number, since it uses less digits than its factorization.

215115130455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14341008705.

The product of its (nonzero) digits is 15000, while the sum is 33.

Adding to 215115130455 its reverse (554031511512), we get a palindrome (769146641967).

The spelling of 215115130455 in words is "two hundred fifteen billion, one hundred fifteen million, one hundred thirty thousand, four hundred fifty-five".