6161986854178 has 16 divisors (see below), whose sum is σ = 9262902240000. Its totient is φ = 3074353643952.

The previous prime is 6161986854169. The next prime is 6161986854217. The reversal of 6161986854178 is 8714586891616.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14494813 + ... + 14913871.

It is an arithmetic number, because the mean of its divisors is an integer number (578931390000).

Almost surely, 2^{6161986854178} is an apocalyptic number.

6161986854178 is a deficient number, since it is larger than the sum of its proper divisors (3100915385822).

6161986854178 is a wasteful number, since it uses less digits than its factorization.

6161986854178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434889.

The product of its digits is 139345920, while the sum is 70.

The spelling of 6161986854178 in words is "six trillion, one hundred sixty-one billion, nine hundred eighty-six million, eight hundred fifty-four thousand, one hundred seventy-eight".