257072440354 has 16 divisors (see below), whose sum is σ = 396550533600. Its totient is φ = 124937886304.

The previous prime is 257072440321. The next prime is 257072440357. The reversal of 257072440354 is 453044270752.

257072440354 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 257072440354.

It is not an unprimeable number, because it can be changed into a prime (257072440357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12228712 + ... + 12249715.

It is an arithmetic number, because the mean of its divisors is an integer number (24784408350).

Almost surely, 2^257072440354 is an apocalyptic number.

257072440354 is a deficient number, since it is larger than the sum of its proper divisors (139478093246).

257072440354 is a wasteful number, since it uses less digits than its factorization.

257072440354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24478577.

The product of its (nonzero) digits is 940800, while the sum is 43.

The spelling of 257072440354 in words is "two hundred fifty-seven billion, seventy-two million, four hundred forty thousand, three hundred fifty-four".