1601210663532 has 18 divisors (see below), whose sum is σ = 4047504732908. Its totient is φ = 533736887832.

The previous prime is 1601210663527. The next prime is 1601210663561. The reversal of 1601210663532 is 2353660121061.

1601210663532 is a `hidden beast` number, since 1 + 6 + 0 + 1 + 2 + 10 + 6 + 635 + 3 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 44478073987 = 1601210663532 / (1 + 6 + 0 + 1 + 2 + 1 + 0 + 6 + 6 + 3 + 5 + 3 + 2).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22239036958 + ... + 22239037029.

Almost surely, 2^{1601210663532} is an apocalyptic number.

1601210663532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1601210663532 is an abundant number, since it is smaller than the sum of its proper divisors (2446294069376).

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

1601210663532 is a wasteful number, since it uses less digits than its factorization.

1601210663532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44478073997 (or 44478073992 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

Adding to 1601210663532 its reverse (2353660121061), we get a palindrome (3954870784593).

The spelling of 1601210663532 in words is "one trillion, six hundred one billion, two hundred ten million, six hundred sixty-three thousand, five hundred thirty-two".