256507724533030 has 16 divisors (see below), whose sum is σ = 486014635957680. Its totient is φ = 97202927191392.

The previous prime is 256507724532989. The next prime is 256507724533037. The reversal of 256507724533030 is 30335427705652.

It is a super-2 number, since 2×256507724533030² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256507724533037) 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, 675020327529 + ... + 675020327908.

It is an arithmetic number, because the mean of its divisors is an integer number (30375914747355).

Almost surely, 2^{256507724533030} is an apocalyptic number.

256507724533030 is a deficient number, since it is larger than the sum of its proper divisors (229506911424650).

256507724533030 is a wasteful number, since it uses less digits than its factorization.

256507724533030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1350040655463.

The product of its (nonzero) digits is 15876000, while the sum is 52.

The spelling of 256507724533030 in words is "two hundred fifty-six trillion, five hundred seven billion, seven hundred twenty-four million, five hundred thirty-three thousand, thirty".