20523404034 has 24 divisors (see below), whose sum is σ = 50819857920. Its totient is φ = 5863829688.

The previous prime is 20523403993. The next prime is 20523404039. The reversal of 20523404034 is 43040432502.

20523404034 is a `hidden beast` number, since 20 + 5 + 234 + 0 + 403 + 4 = 666.

It is a super-3 number, since 3×20523404034³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 20523403989 and 20523404007.

It is not an unprimeable number, because it can be changed into a prime (20523404039) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81441954 + ... + 81442205.

It is an arithmetic number, because the mean of its divisors is an integer number (2117494080).

Almost surely, 2^20523404034 is an apocalyptic number.

20523404034 is an abundant number, since it is smaller than the sum of its proper divisors (30296453886).

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

20523404034 is a wasteful number, since it uses less digits than its factorization.

20523404034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162884174 (or 162884171 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

Adding to 20523404034 its reverse (43040432502), we get a palindrome (63563836536).

The spelling of 20523404034 in words is "twenty billion, five hundred twenty-three million, four hundred four thousand, thirty-four".