32012639890 has 64 divisors (see below), whose sum is σ = 71903635200. Its totient is φ = 9969315840.

The previous prime is 32012639833. The next prime is 32012639891. The reversal of 32012639890 is 9893621023.

It is a super-2 number, since 2×32012639890² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (32012639891) 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 31 ways as a sum of consecutive naturals, for example, 901186 + ... + 936034.

It is an arithmetic number, because the mean of its divisors is an integer number (1123494300).

Almost surely, 2^32012639890 is an apocalyptic number.

32012639890 is an abundant number, since it is smaller than the sum of its proper divisors (39890995310).

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

32012639890 is a wasteful number, since it uses less digits than its factorization.

32012639890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36067.

The product of its (nonzero) digits is 139968, while the sum is 43.

The spelling of 32012639890 in words is "thirty-two billion, twelve million, six hundred thirty-nine thousand, eight hundred ninety".