20301243540 has 48 divisors (see below), whose sum is σ = 57482187840. Its totient is φ = 5352835840.

The previous prime is 20301243517. The next prime is 20301243551. The reversal of 20301243540 is 4534210302.

It is a super-3 number, since 3×20301243540³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20301243540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1895526 + ... + 1906205.

It is an arithmetic number, because the mean of its divisors is an integer number (1197545580).

Almost surely, 2^20301243540 is an apocalyptic number.

20301243540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20301243540 is an abundant number, since it is smaller than the sum of its proper divisors (37180944300).

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

20301243540 is a wasteful number, since it uses less digits than its factorization.

20301243540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3801832 (or 3801830 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 20301243540 its reverse (4534210302), we get a palindrome (24835453842).

The spelling of 20301243540 in words is "twenty billion, three hundred one million, two hundred forty-three thousand, five hundred forty".