20523326120420 has 24 divisors (see below), whose sum is σ = 43124808161400. Its totient is φ = 8204411722752.

The previous prime is 20523326120419. The next prime is 20523326120431. The reversal of 20523326120420 is 2402162332502.

It can be written as a sum of positive squares in 4 ways, for example, as 562947088804 + 19960379031616 = 750298^2 + 4467704^2 .

It is a super-2 number, since 2×20523326120420² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307386125 + ... + 307452884.

It is an arithmetic number, because the mean of its divisors is an integer number (1796867006725).

Almost surely, 2^{20523326120420} is an apocalyptic number.

20523326120420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20523326120420 is an abundant number, since it is smaller than the sum of its proper divisors (22601482040980).

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

20523326120420 is a wasteful number, since it uses less digits than its factorization.

20523326120420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614840687 (or 614840685 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 32.

Adding to 20523326120420 its reverse (2402162332502), we get a palindrome (22925488452922).

The spelling of 20523326120420 in words is "twenty trillion, five hundred twenty-three billion, three hundred twenty-six million, one hundred twenty thousand, four hundred twenty".