20445935970 has 32 divisors (see below), whose sum is σ = 49371302592. Its totient is φ = 5418798912.

The previous prime is 20445935953. The next prime is 20445935977. The reversal of 20445935970 is 7953954402.

It is not an unprimeable number, because it can be changed into a prime (20445935977) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2085697 + ... + 2095476.

It is an arithmetic number, because the mean of its divisors is an integer number (1542853206).

Almost surely, 2^20445935970 is an apocalyptic number.

20445935970 is an abundant number, since it is smaller than the sum of its proper divisors (28925366622).

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

20445935970 is a wasteful number, since it uses less digits than its factorization.

20445935970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4181346.

The product of its (nonzero) digits is 1360800, while the sum is 48.

The spelling of 20445935970 in words is "twenty billion, four hundred forty-five million, nine hundred thirty-five thousand, nine hundred seventy".