257420095097 has 16 divisors (see below), whose sum is σ = 281564881920. Its totient is φ = 233399443200.

The previous prime is 257420095069. The next prime is 257420095103. The reversal of 257420095097 is 790590024752.

It is not a de Polignac number, because 257420095097 - 2⁶ = 257420095033 is a prime.

It is a super-3 number, since 3×257420095097³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (257420095397) 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, 31111553 + ... + 31119825.

It is an arithmetic number, because the mean of its divisors is an integer number (17597805120).

Almost surely, 2^257420095097 is an apocalyptic number.

It is an amenable number.

257420095097 is a deficient number, since it is larger than the sum of its proper divisors (24144786823).

257420095097 is a wasteful number, since it uses less digits than its factorization.

257420095097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15424.

The product of its (nonzero) digits is 1587600, while the sum is 50.

The spelling of 257420095097 in words is "two hundred fifty-seven billion, four hundred twenty million, ninety-five thousand, ninety-seven".