1534216535661 has 12 divisors (see below), whose sum is σ = 2158952910432. Its totient is φ = 968978863944.

The previous prime is 1534216535651. The next prime is 1534216535707. The reversal of 1534216535661 is 1665356124351.

It is not a de Polignac number, because 1534216535661 - 2¹³ = 1534216527469 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1534216535661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1534216535651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 708316801 + ... + 708318966.

It is an arithmetic number, because the mean of its divisors is an integer number (179912742536).

Almost surely, 2^{1534216535661} is an apocalyptic number.

It is an amenable number.

1534216535661 is a deficient number, since it is larger than the sum of its proper divisors (624736374771).

1534216535661 is a wasteful number, since it uses less digits than its factorization.

1534216535661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1416635808 (or 1416635789 counting only the distinct ones).

The product of its digits is 1944000, while the sum is 48.

The spelling of 1534216535661 in words is "one trillion, five hundred thirty-four billion, two hundred sixteen million, five hundred thirty-five thousand, six hundred sixty-one".