32640344121 has 32 divisors (see below), whose sum is σ = 54818684928. Its totient is φ = 16781207040.

The previous prime is 32640344111. The next prime is 32640344123. The reversal of 32640344121 is 12144304623.

It is not a de Polignac number, because 32640344121 - 2⁹ = 32640343609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (32640344123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 705945 + ... + 750758.

It is an arithmetic number, because the mean of its divisors is an integer number (1713083904).

Almost surely, 2^32640344121 is an apocalyptic number.

It is an amenable number.

32640344121 is a deficient number, since it is larger than the sum of its proper divisors (22178340807).

32640344121 is a wasteful number, since it uses less digits than its factorization.

32640344121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1456821.

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 32640344121 its reverse (12144304623), we get a palindrome (44784648744).

The spelling of 32640344121 in words is "thirty-two billion, six hundred forty million, three hundred forty-four thousand, one hundred twenty-one".