32616809681 has 4 divisors (see below), whose sum is σ = 33668964864. Its totient is φ = 31564654500.

The previous prime is 32616809669. The next prime is 32616809707. The reversal of 32616809681 is 18690861623.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 32616809681 - 2¹⁰ = 32616808657 is a prime.

It is a super-2 number, since 2×32616809681² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32616809881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 526077545 + ... + 526077606.

It is an arithmetic number, because the mean of its divisors is an integer number (8417241216).

Almost surely, 2^32616809681 is an apocalyptic number.

32616809681 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

32616809681 is a deficient number, since it is larger than the sum of its proper divisors (1052155183).

32616809681 is a wasteful number, since it uses less digits than its factorization.

32616809681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1052155182.

The product of its (nonzero) digits is 746496, while the sum is 50.

The spelling of 32616809681 in words is "thirty-two billion, six hundred sixteen million, eight hundred nine thousand, six hundred eighty-one".