257077273761557 has 8 divisors (see below), whose sum is σ = 257236817422080. Its totient is φ = 256917753892800.

The previous prime is 257077273761457. The next prime is 257077273761563. The reversal of 257077273761557 is 755167372770752.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 257077273761557 - 2¹² = 257077273757461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257077273761457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15693794 + ... + 27576252.

It is an arithmetic number, because the mean of its divisors is an integer number (32154602177760).

Almost surely, 2^{257077273761557} is an apocalyptic number.

It is an amenable number.

257077273761557 is a deficient number, since it is larger than the sum of its proper divisors (159543660523).

257077273761557 is a wasteful number, since it uses less digits than its factorization.

257077273761557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11895883.

The product of its (nonzero) digits is 1058841000, while the sum is 71.

The spelling of 257077273761557 in words is "two hundred fifty-seven trillion, seventy-seven billion, two hundred seventy-three million, seven hundred sixty-one thousand, five hundred fifty-seven".