106685553474778 has 8 divisors (see below), whose sum is σ = 169441761401172. Its totient is φ = 50204966341056.

The previous prime is 106685553474767. The next prime is 106685553474817. The reversal of 106685553474778 is 877474355586601.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 92521448103249 + 14164105371529 = 9618807^2 + 3763523^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×106685553474778² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1568905198125 + ... + 1568905198192.

Almost surely, 2^{106685553474778} is an apocalyptic number.

106685553474778 is a deficient number, since it is larger than the sum of its proper divisors (62756207926394).

106685553474778 is a wasteful number, since it uses less digits than its factorization.

106685553474778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3137810396336.

The product of its (nonzero) digits is 4741632000, while the sum is 76.

The spelling of 106685553474778 in words is "one hundred six trillion, six hundred eighty-five billion, five hundred fifty-three million, four hundred seventy-four thousand, seven hundred seventy-eight".