1115855999471 has 2 divisors, whose sum is σ = 1115855999472. Its totient is φ = 1115855999470.

The previous prime is 1115855999459. The next prime is 1115855999537. The reversal of 1115855999471 is 1749995585111.

It is a weak prime.

It is an emirp because it is prime and its reverse (1749995585111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1115855999471 - 2²⁶ = 1115788890607 is a prime.

It is a super-3 number, since 3×1115855999471³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 1115855999398 and 1115855999407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1115855999441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557927999735 + 557927999736.

It is an arithmetic number, because the mean of its divisors is an integer number (557927999736).

Almost surely, 2^{1115855999471} is an apocalyptic number.

1115855999471 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115855999471 is an equidigital number, since it uses as much as digits as its factorization.

1115855999471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20412000, while the sum is 65.

The spelling of 1115855999471 in words is "one trillion, one hundred fifteen billion, eight hundred fifty-five million, nine hundred ninety-nine thousand, four hundred seventy-one".