257663222046 has 32 divisors (see below), whose sum is σ = 572954772000. Its totient is φ = 85832265600.

The previous prime is 257663222017. The next prime is 257663222051. The reversal of 257663222046 is 640222366752.

257663222046 is a `hidden beast` number, since 2 + 5 + 7 + 6 + 632 + 2 + 2 + 0 + 4 + 6 = 666.

It is a super-2 number, since 2×257663222046² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 257663221992 and 257663222010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1456555 + ... + 1623846.

It is an arithmetic number, because the mean of its divisors is an integer number (17904836625).

Almost surely, 2^257663222046 is an apocalyptic number.

257663222046 is an abundant number, since it is smaller than the sum of its proper divisors (315291549954).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

257663222046 is a wasteful number, since it uses less digits than its factorization.

257663222046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3081961 (or 3081955 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 45.

Adding to 257663222046 its reverse (640222366752), we get a palindrome (897885588798).

The spelling of 257663222046 in words is "two hundred fifty-seven billion, six hundred sixty-three million, two hundred twenty-two thousand, forty-six".