78471446472287 has 16 divisors (see below), whose sum is σ = 88381892358144. Its totient is φ = 69024572940000.

The previous prime is 78471446472271. The next prime is 78471446472323. The reversal of 78471446472287 is 78227464417487.

It is a cyclic number.

It is not a de Polignac number, because 78471446472287 - 2⁴ = 78471446472271 is a prime.

It is a super-2 number, since 2×78471446472287² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78471446472287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78471446472247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17833964 + ... + 21794337.

It is an arithmetic number, because the mean of its divisors is an integer number (5523868272384).

Almost surely, 2^{78471446472287} is an apocalyptic number.

78471446472287 is a deficient number, since it is larger than the sum of its proper divisors (9910445885857).

78471446472287 is a wasteful number, since it uses less digits than its factorization.

78471446472287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39634150.

The product of its digits is 944111616, while the sum is 71.

The spelling of 78471446472287 in words is "seventy-eight trillion, four hundred seventy-one billion, four hundred forty-six million, four hundred seventy-two thousand, two hundred eighty-seven".