478357589977 has 2 divisors, whose sum is σ = 478357589978. Its totient is φ = 478357589976.

The previous prime is 478357589939. The next prime is 478357590037. The reversal of 478357589977 is 779985753874.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 477894307401 + 463282576 = 691299^2 + 21524^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-478357589977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 478357589897 and 478357589906.

It is not a weakly prime, because it can be changed into another prime (478357589077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239178794988 + 239178794989.

It is an arithmetic number, because the mean of its divisors is an integer number (239178794989).

Almost surely, 2^478357589977 is an apocalyptic number.

It is an amenable number.

478357589977 is a deficient number, since it is larger than the sum of its proper divisors (1).

478357589977 is an equidigital number, since it uses as much as digits as its factorization.

478357589977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3734035200, while the sum is 79.

The spelling of 478357589977 in words is "four hundred seventy-eight billion, three hundred fifty-seven million, five hundred eighty-nine thousand, nine hundred seventy-seven".