20629650672 has 160 divisors (see below), whose sum is σ = 62513856000. Its totient is φ = 6495552000.

The previous prime is 20629650649. The next prime is 20629650677. The reversal of 20629650672 is 27605692602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20629650677) 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, 2943172 + ... + 2950172.

It is an arithmetic number, because the mean of its divisors is an integer number (390711600).

Almost surely, 2^20629650672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20629650672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31256928000).

20629650672 is an abundant number, since it is smaller than the sum of its proper divisors (41884205328).

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

20629650672 is a wasteful number, since it uses less digits than its factorization.

20629650672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7396 (or 7384 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The spelling of 20629650672 in words is "twenty billion, six hundred twenty-nine million, six hundred fifty thousand, six hundred seventy-two".