78467477476487 has 4 divisors (see below), whose sum is σ = 85600884519816. Its totient is φ = 71334070433160.

The previous prime is 78467477476483. The next prime is 78467477476511.

78467477476487 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78467477476487 - 2² = 78467477476483 is a prime.

It is a super-2 number, since 2×78467477476487² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78467477476399 and 78467477476408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78467477476483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3566703521648 + ... + 3566703521669.

It is an arithmetic number, because the mean of its divisors is an integer number (21400221129954).

Almost surely, 2^{78467477476487} is an apocalyptic number.

78467477476487 is a deficient number, since it is larger than the sum of its proper divisors (7133407043329).

78467477476487 is a wasteful number, since it uses less digits than its factorization.

78467477476487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7133407043328.

The product of its digits is 69392203776, while the sum is 86.

The spelling of 78467477476487 in words is "seventy-eight trillion, four hundred sixty-seven billion, four hundred seventy-seven million, four hundred seventy-six thousand, four hundred eighty-seven".