478768387862477 has 4 divisors (see below), whose sum is σ = 478769263091520. Its totient is φ = 478767512633436.

The previous prime is 478768387862461. The next prime is 478768387862497. The reversal of 478768387862477 is 774268783867874.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 478768387862477 - 2⁴ = 478768387862461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478768387862417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 436793477 + ... + 437888202.

It is an arithmetic number, because the mean of its divisors is an integer number (119692315772880).

Almost surely, 2^{478768387862477} is an apocalyptic number.

It is an amenable number.

478768387862477 is a deficient number, since it is larger than the sum of its proper divisors (875229043).

478768387862477 is an equidigital number, since it uses as much as digits as its factorization.

478768387862477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875229042.

The product of its digits is 237916127232, while the sum is 92.

The spelling of 478768387862477 in words is "four hundred seventy-eight trillion, seven hundred sixty-eight billion, three hundred eighty-seven million, eight hundred sixty-two thousand, four hundred seventy-seven".