20523241540 has 24 divisors (see below), whose sum is σ = 43705835712. Its totient is φ = 8093672160.

The previous prime is 20523241499. The next prime is 20523241553. The reversal of 20523241540 is 4514232502.

It is a super-3 number, since 3×20523241540³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20523241499 and 20523241508.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7225074 + ... + 7227913.

It is an arithmetic number, because the mean of its divisors is an integer number (1821076488).

Almost surely, 2^20523241540 is an apocalyptic number.

20523241540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20523241540 is an abundant number, since it is smaller than the sum of its proper divisors (23182594172).

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

20523241540 is a wasteful number, since it uses less digits than its factorization.

20523241540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14453067 (or 14453065 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The spelling of 20523241540 in words is "twenty billion, five hundred twenty-three million, two hundred forty-one thousand, five hundred forty".