836708478842 has 16 divisors (see below), whose sum is σ = 1257408000360. Its totient is φ = 417572643072.

The previous prime is 836708478841. The next prime is 836708478863. The reversal of 836708478842 is 248874807638.

It can be written as a sum of positive squares in 4 ways, for example, as 791083946041 + 45624532801 = 889429^2 + 213599^2 .

It is not an unprimeable number, because it can be changed into a prime (836708478841) 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, 11700548 + ... + 11771840.

Almost surely, 2^836708478842 is an apocalyptic number.

836708478842 is a deficient number, since it is larger than the sum of its proper divisors (420699521518).

836708478842 is a wasteful number, since it uses less digits than its factorization.

836708478842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82177.

The product of its (nonzero) digits is 115605504, while the sum is 65.

The spelling of 836708478842 in words is "eight hundred thirty-six billion, seven hundred eight million, four hundred seventy-eight thousand, eight hundred forty-two".