20696541552 has 160 divisors (see below), whose sum is σ = 61090286400. Its totient is φ = 6705773568.

The previous prime is 20696541529. The next prime is 20696541583. The reversal of 20696541552 is 25514569602.

20696541552 is a `hidden beast` number, since 2 + 0 + 6 + 96 + 5 + 4 + 1 + 552 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 20696541498 and 20696541507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2491518 + ... + 2499810.

It is an arithmetic number, because the mean of its divisors is an integer number (381814290).

Almost surely, 2^20696541552 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 20696541552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30545143200).

20696541552 is an abundant number, since it is smaller than the sum of its proper divisors (40393744848).

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

20696541552 is a wasteful number, since it uses less digits than its factorization.

20696541552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8472 (or 8460 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 45.

The spelling of 20696541552 in words is "twenty billion, six hundred ninety-six million, five hundred forty-one thousand, five hundred fifty-two".