256850746537 has 8 divisors (see below), whose sum is σ = 320229502272. Its totient is φ = 200143438800.

The previous prime is 256850746507. The next prime is 256850746573. The reversal of 256850746537 is 735647058652.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256850746537 is a prime.

It is a super-2 number, since 2×256850746537² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256850746507) 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, 1667861914 + ... + 1667862067.

It is an arithmetic number, because the mean of its divisors is an integer number (40028687784).

Almost surely, 2^256850746537 is an apocalyptic number.

It is an amenable number.

256850746537 is a deficient number, since it is larger than the sum of its proper divisors (63378755735).

256850746537 is a wasteful number, since it uses less digits than its factorization.

256850746537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3335723999.

The product of its (nonzero) digits is 42336000, while the sum is 58.

The spelling of 256850746537 in words is "two hundred fifty-six billion, eight hundred fifty million, seven hundred forty-six thousand, five hundred thirty-seven".