20693320452 has 120 divisors (see below), whose sum is σ = 61900494656. Its totient is φ = 5905109952.

The previous prime is 20693320441. The next prime is 20693320511. The reversal of 20693320452 is 25402339602.

It is a happy number.

20693320452 is a `hidden beast` number, since 206 + 93 + 320 + 45 + 2 = 666.

It is a super-2 number, since 2×20693320452² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1997478 + ... + 2007810.

Almost surely, 2^20693320452 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 20693320452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30950247328).

20693320452 is an abundant number, since it is smaller than the sum of its proper divisors (41207174204).

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

20693320452 is a wasteful number, since it uses less digits than its factorization.

20693320452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11239 (or 11228 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The spelling of 20693320452 in words is "twenty billion, six hundred ninety-three million, three hundred twenty thousand, four hundred fifty-two".