257136770348 has 12 divisors (see below), whose sum is σ = 456705607512. Its totient is φ = 126649453920.

The previous prime is 257136770347. The next prime is 257136770353. The reversal of 257136770348 is 843077631752.

It is a super-2 number, since 2×257136770348² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 257136770348.

It is not an unprimeable number, because it can be changed into a prime (257136770347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 479732513 + ... + 479733048.

It is an arithmetic number, because the mean of its divisors is an integer number (38058800626).

Almost surely, 2^257136770348 is an apocalyptic number.

It is an amenable number.

257136770348 is a deficient number, since it is larger than the sum of its proper divisors (199568837164).

257136770348 is a wasteful number, since it uses less digits than its factorization.

257136770348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 959465632 (or 959465630 counting only the distinct ones).

The product of its (nonzero) digits is 5927040, while the sum is 53.

The spelling of 257136770348 in words is "two hundred fifty-seven billion, one hundred thirty-six million, seven hundred seventy thousand, three hundred forty-eight".