1631665440052 has 12 divisors (see below), whose sum is σ = 2855485430980. Its totient is φ = 815812459776.

The previous prime is 1631665440029. The next prime is 1631665440071. The reversal of 1631665440052 is 2500445661361.

It can be written as a sum of positive squares in 2 ways, for example, as 610704738576 + 1020960701476 = 781476^2 + 1010426^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1631665439990 and 1631665440008.

It is a congruent number.

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, 4883133 + ... + 5206564.

Almost surely, 2^{1631665440052} is an apocalyptic number.

It is an amenable number.

1631665440052 is a deficient number, since it is larger than the sum of its proper divisors (1223819990928).

1631665440052 is a wasteful number, since it uses less digits than its factorization.

1631665440052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10130130 (or 10130128 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 43.

The spelling of 1631665440052 in words is "one trillion, six hundred thirty-one billion, six hundred sixty-five million, four hundred forty thousand, fifty-two".