32640506690 has 16 divisors (see below), whose sum is σ = 64094086080. Its totient is φ = 11869275120.

The previous prime is 32640506687. The next prime is 32640506699. The reversal of 32640506690 is 9660504623.

It is a super-2 number, since 2×32640506690² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (32640506699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148365830 + ... + 148366049.

It is an arithmetic number, because the mean of its divisors is an integer number (4005880380).

Almost surely, 2^32640506690 is an apocalyptic number.

32640506690 is a deficient number, since it is larger than the sum of its proper divisors (31453579390).

32640506690 is a wasteful number, since it uses less digits than its factorization.

32640506690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296731897.

The product of its (nonzero) digits is 233280, while the sum is 41.

The spelling of 32640506690 in words is "thirty-two billion, six hundred forty million, five hundred six thousand, six hundred ninety".