257212272146 has 16 divisors (see below), whose sum is σ = 386317678848. Its totient is φ = 128439788400.

The previous prime is 257212272113. The next prime is 257212272157. The reversal of 257212272146 is 641272212752.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7774736 + ... + 7807748.

It is an arithmetic number, because the mean of its divisors is an integer number (24144854928).

Almost surely, 2^257212272146 is an apocalyptic number.

257212272146 is a deficient number, since it is larger than the sum of its proper divisors (129105406702).

257212272146 is a wasteful number, since it uses less digits than its factorization.

257212272146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37937.

The product of its digits is 188160, while the sum is 41.

Adding to 257212272146 its reverse (641272212752), we get a palindrome (898484484898).

The spelling of 257212272146 in words is "two hundred fifty-seven billion, two hundred twelve million, two hundred seventy-two thousand, one hundred forty-six".