257143534754 has 32 divisors (see below), whose sum is σ = 400266994176. Its totient is φ = 123766133760.

The previous prime is 257143534751. The next prime is 257143534799. The reversal of 257143534754 is 457435341752.

It is a super-2 number, since 2×257143534754² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (257143534751) 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, 17120552 + ... + 17135564.

It is an arithmetic number, because the mean of its divisors is an integer number (12508343568).

Almost surely, 2^257143534754 is an apocalyptic number.

257143534754 is a deficient number, since it is larger than the sum of its proper divisors (143123459422).

257143534754 is a wasteful number, since it uses less digits than its factorization.

257143534754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16490.

The product of its digits is 7056000, while the sum is 50.

The spelling of 257143534754 in words is "two hundred fifty-seven billion, one hundred forty-three million, five hundred thirty-four thousand, seven hundred fifty-four".