32278521853561 has 27 divisors (see below), whose sum is σ = 33581999379981. Its totient is φ = 31024365653568.

The previous prime is 32278521853553. The next prime is 32278521853577. The reversal of 32278521853561 is 16535812587223.

It is a happy number.

The square root of 32278521853561 is 5681419.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 7747699673961 + 24530822179600 = 2783469^2 + 4952860^2 .

It is not a de Polignac number, because 32278521853561 - 2³ = 32278521853553 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 32278521853496 and 32278521853505.

It is not an unprimeable number, because it can be changed into a prime (32278521853261) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 67387310520 + ... + 67387310998.

Almost surely, 2^{32278521853561} is an apocalyptic number.

32278521853561 is the 5681419-th square number.

32278521853561 is the 2840710-th centered octagonal number.

It is an amenable number.

32278521853561 is a deficient number, since it is larger than the sum of its proper divisors (1303477526420).

32278521853561 is an frugal number, since it uses more digits than its factorization.

32278521853561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1834 (or 917 counting only the distinct ones).

The product of its digits is 24192000, while the sum is 58.

The spelling of 32278521853561 in words is "thirty-two trillion, two hundred seventy-eight billion, five hundred twenty-one million, eight hundred fifty-three thousand, five hundred sixty-one".