457778316988 has 6 divisors (see below), whose sum is σ = 801112054736. Its totient is φ = 228889158492.

The previous prime is 457778316943. The next prime is 457778316991. The reversal of 457778316988 is 889613877754.

It is a self number, because there is not a number n which added to its sum of digits gives 457778316988.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57222289620 + ... + 57222289627.

Almost surely, 2^457778316988 is an apocalyptic number.

It is an amenable number.

457778316988 is a deficient number, since it is larger than the sum of its proper divisors (343333737748).

457778316988 is a wasteful number, since it uses less digits than its factorization.

457778316988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114444579251 (or 114444579249 counting only the distinct ones).

The product of its digits is 568995840, while the sum is 73.

The spelling of 457778316988 in words is "four hundred fifty-seven billion, seven hundred seventy-eight million, three hundred sixteen thousand, nine hundred eighty-eight".