256070186855 has 16 divisors (see below), whose sum is σ = 366450753024. Its totient is φ = 167956594080.

The previous prime is 256070186851. The next prime is 256070186861. The reversal of 256070186855 is 558681070652.

It is a happy number.

It is not a de Polignac number, because 256070186855 - 2² = 256070186851 is a prime.

It is a super-2 number, since 2×256070186855² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 256070186797 and 256070186806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256070186851) 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, 159049001 + ... + 159050610.

It is an arithmetic number, because the mean of its divisors is an integer number (22903172064).

Almost surely, 2^256070186855 is an apocalyptic number.

256070186855 is a deficient number, since it is larger than the sum of its proper divisors (110380566169).

256070186855 is a wasteful number, since it uses less digits than its factorization.

256070186855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318099646.

The product of its (nonzero) digits is 4032000, while the sum is 53.

The spelling of 256070186855 in words is "two hundred fifty-six billion, seventy million, one hundred eighty-six thousand, eight hundred fifty-five".