257473261108 has 72 divisors (see below), whose sum is σ = 532446155136. Its totient is φ = 106715401920.

The previous prime is 257473261103. The next prime is 257473261121. The reversal of 257473261108 is 801162374752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257473261103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66649185 + ... + 66653047.

It is an arithmetic number, because the mean of its divisors is an integer number (7395085488).

Almost surely, 2^257473261108 is an apocalyptic number.

257473261108 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 257473261108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266223077568).

257473261108 is an abundant number, since it is smaller than the sum of its proper divisors (274972894028).

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

257473261108 is a wasteful number, since it uses less digits than its factorization.

257473261108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6413 (or 6380 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 46.

The spelling of 257473261108 in words is "two hundred fifty-seven billion, four hundred seventy-three million, two hundred sixty-one thousand, one hundred eight".