168106038361778 has 32 divisors (see below), whose sum is σ = 281266927502400. Its totient is φ = 74712951106560.

The previous prime is 168106038361777. The next prime is 168106038361829. The reversal of 168106038361778 is 877163830601861.

It is a super-2 number, since 2×168106038361778² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (168106038361777) 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, 474371603 + ... + 474725846.

It is an arithmetic number, because the mean of its divisors is an integer number (8789591484450).

Almost surely, 2^{168106038361778} is an apocalyptic number.

168106038361778 is a deficient number, since it is larger than the sum of its proper divisors (113160889140622).

168106038361778 is a wasteful number, since it uses less digits than its factorization.

168106038361778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949097642.

The product of its (nonzero) digits is 48771072, while the sum is 65.

The spelling of 168106038361778 in words is "one hundred sixty-eight trillion, one hundred six billion, thirty-eight million, three hundred sixty-one thousand, seven hundred seventy-eight".