78181083516471 has 8 divisors (see below), whose sum is σ = 112260017357040. Its totient is φ = 48111436010112.

The previous prime is 78181083516469. The next prime is 78181083516517. The reversal of 78181083516471 is 17461538018187.

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

It is not a de Polignac number, because 78181083516471 - 2¹ = 78181083516469 is a prime.

It is a super-3 number, since 3×78181083516471³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78181083516421) 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, 1002321583506 + ... + 1002321583583.

It is an arithmetic number, because the mean of its divisors is an integer number (14032502169630).

Almost surely, 2^{78181083516471} is an apocalyptic number.

78181083516471 is a deficient number, since it is larger than the sum of its proper divisors (34078933840569).

78181083516471 is a wasteful number, since it uses less digits than its factorization.

78181083516471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2004643167105.

The product of its (nonzero) digits is 9031680, while the sum is 60.

The spelling of 78181083516471 in words is "seventy-eight trillion, one hundred eighty-one billion, eighty-three million, five hundred sixteen thousand, four hundred seventy-one".