257350146940 has 48 divisors (see below), whose sum is σ = 548311952160. Its totient is φ = 101445939200.

The previous prime is 257350146869. The next prime is 257350146941. The reversal of 257350146940 is 49641053752.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257350146941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 472356 + ... + 858964.

It is an arithmetic number, because the mean of its divisors is an integer number (11423165670).

Almost surely, 2^257350146940 is an apocalyptic number.

257350146940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

257350146940 is an abundant number, since it is smaller than the sum of its proper divisors (290961805220).

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

257350146940 is a wasteful number, since it uses less digits than its factorization.

257350146940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387102 (or 387100 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 46.

The spelling of 257350146940 in words is "two hundred fifty-seven billion, three hundred fifty million, one hundred forty-six thousand, nine hundred forty".