1651665168036 has 144 divisors (see below), whose sum is σ = 4522586664960. Its totient is φ = 505230877440.

The previous prime is 1651665168017. The next prime is 1651665168059. The reversal of 1651665168036 is 6308615661561.

1651665168036 is a `hidden beast` number, since 1 + 6 + 5 + 16 + 6 + 516 + 80 + 36 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 55730070 + ... + 55759698.

It is an arithmetic number, because the mean of its divisors is an integer number (31406851840).

Almost surely, 2^{1651665168036} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1651665168036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2261293332480).

1651665168036 is an abundant number, since it is smaller than the sum of its proper divisors (2870921496924).

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

1651665168036 is a wasteful number, since it uses less digits than its factorization.

1651665168036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30346 (or 30341 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 54.

The spelling of 1651665168036 in words is "one trillion, six hundred fifty-one billion, six hundred sixty-five million, one hundred sixty-eight thousand, thirty-six".