20645337751032 has 32 divisors (see below), whose sum is σ = 51901687094400. Its totient is φ = 6843333554784.

The previous prime is 20645337751013. The next prime is 20645337751043. The reversal of 20645337751032 is 23015773354602.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2402851588 + ... + 2402860179.

It is an arithmetic number, because the mean of its divisors is an integer number (1621927721700).

Almost surely, 2^{20645337751032} is an apocalyptic number.

It is an amenable number.

20645337751032 is an abundant number, since it is smaller than the sum of its proper divisors (31256349343368).

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

20645337751032 is a wasteful number, since it uses less digits than its factorization.

20645337751032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4805711955 (or 4805711951 counting only the distinct ones).

The product of its (nonzero) digits is 3175200, while the sum is 48.

The spelling of 20645337751032 in words is "twenty trillion, six hundred forty-five billion, three hundred thirty-seven million, seven hundred fifty-one thousand, thirty-two".