115515451421471 has 2 divisors, whose sum is σ = 115515451421472. Its totient is φ = 115515451421470.

The previous prime is 115515451421449. The next prime is 115515451421543. The reversal of 115515451421471 is 174124154515511.

It is a weak prime.

It is an emirp because it is prime and its reverse (174124154515511) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115515451421471 is a prime.

It is a super-3 number, since 3×115515451421471³ (a number of 43 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115515451421431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57757725710735 + 57757725710736.

It is an arithmetic number, because the mean of its divisors is an integer number (57757725710736).

Almost surely, 2^{115515451421471} is an apocalyptic number.

115515451421471 is a deficient number, since it is larger than the sum of its proper divisors (1).

115515451421471 is an equidigital number, since it uses as much as digits as its factorization.

115515451421471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 560000, while the sum is 47.

The spelling of 115515451421471 in words is "one hundred fifteen trillion, five hundred fifteen billion, four hundred fifty-one million, four hundred twenty-one thousand, four hundred seventy-one".