102215544451455 has 32 divisors (see below), whose sum is σ = 179637387056640. Its totient is φ = 49400281434240.

The previous prime is 102215544451451. The next prime is 102215544451457. The reversal of 102215544451455 is 554154445512201.

It is not a de Polignac number, because 102215544451455 - 2² = 102215544451451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102215544451451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7796755036 + ... + 7796768145.

It is an arithmetic number, because the mean of its divisors is an integer number (5613668345520).

Almost surely, 2^{102215544451455} is an apocalyptic number.

102215544451455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

102215544451455 is a deficient number, since it is larger than the sum of its proper divisors (77421842605185).

102215544451455 is a wasteful number, since it uses less digits than its factorization.

102215544451455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15593523231.

The product of its (nonzero) digits is 3200000, while the sum is 48.

Adding to 102215544451455 its reverse (554154445512201), we get a palindrome (656369989963656).

The spelling of 102215544451455 in words is "one hundred two trillion, two hundred fifteen billion, five hundred forty-four million, four hundred fifty-one thousand, four hundred fifty-five".