32161856776 has 288 divisors, whose sum is σ = 81269357400. Its totient is φ = 11840532480.

The previous prime is 32161856761. The next prime is 32161856791. The reversal of 32161856776 is 67765816123.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (32161856761) and next prime (32161856791).

It can be written as a sum of positive squares in 4 ways, for example, as 28891160676 + 3270696100 = 169974^2 + 57190^2 .

It is a super-2 number, since 2×32161856776² (a number of 22 digits) contains 22 as substring.

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 71 ways as a sum of consecutive naturals, for example, 69765186 + ... + 69765646.

Almost surely, 2^32161856776 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 32161856776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40634678700).

32161856776 is an abundant number, since it is smaller than the sum of its proper divisors (49107500624).

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

32161856776 is a wasteful number, since it uses less digits than its factorization.

32161856776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565 (or 535 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 52.

The spelling of 32161856776 in words is "thirty-two billion, one hundred sixty-one million, eight hundred fifty-six thousand, seven hundred seventy-six".