3564369778212 has 36 divisors (see below), whose sum is σ = 9011748398380. Its totient is φ = 1187884092672.

The previous prime is 3564369778121. The next prime is 3564369778241. The reversal of 3564369778212 is 2128779634653.

It is a happy number.

3564369778212 is a `hidden beast` number, since 3 + 56 + 4 + 369 + 7 + 7 + 8 + 212 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 919400993316 + 2644968784896 = 958854^2 + 1626336^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 3564369778212.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9783913 + ... + 10141680.

Almost surely, 2^{3564369778212} is an apocalyptic number.

It is an amenable number.

3564369778212 is an abundant number, since it is smaller than the sum of its proper divisors (5447378620168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3564369778212 is a wasteful number, since it uses less digits than its factorization.

3564369778212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19930572 (or 19930567 counting only the distinct ones).

The product of its digits is 91445760, while the sum is 63.

The spelling of 3564369778212 in words is "three trillion, five hundred sixty-four billion, three hundred sixty-nine million, seven hundred seventy-eight thousand, two hundred twelve".