856145541658 has 64 divisors (see below), whose sum is σ = 1467115130880. Its totient is φ = 371167948800.

The previous prime is 856145541637. The next prime is 856145541677.

856145541658 is nontrivially palindromic in base 10.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23699866 + ... + 23735962.

It is an arithmetic number, because the mean of its divisors is an integer number (22923673920).

Almost surely, 2^856145541658 is an apocalyptic number.

856145541658 is a deficient number, since it is larger than the sum of its proper divisors (610969589222).

856145541658 is a wasteful number, since it uses less digits than its factorization.

856145541658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36643.

The product of its digits is 23040000, while the sum is 58.

The spelling of 856145541658 in words is "eight hundred fifty-six billion, one hundred forty-five million, five hundred forty-one thousand, six hundred fifty-eight".