257402829146055 has 32 divisors (see below), whose sum is σ = 415248304493568. Its totient is φ = 136151049571200.

The previous prime is 257402829146041. The next prime is 257402829146087. The reversal of 257402829146055 is 550641928204752.

It is not a de Polignac number, because 257402829146055 - 2⁶ = 257402829145991 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 257402829146055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 128169361 + ... + 130162170.

It is an arithmetic number, because the mean of its divisors is an integer number (12976509515424).

Almost surely, 2^{257402829146055} is an apocalyptic number.

257402829146055 is a deficient number, since it is larger than the sum of its proper divisors (157845475347513).

257402829146055 is a wasteful number, since it uses less digits than its factorization.

257402829146055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258332087.

The product of its (nonzero) digits is 48384000, while the sum is 60.

The spelling of 257402829146055 in words is "two hundred fifty-seven trillion, four hundred two billion, eight hundred twenty-nine million, one hundred forty-six thousand, fifty-five".