20341504540 has 24 divisors (see below), whose sum is σ = 48819611232. Its totient is φ = 6974230080.

The previous prime is 20341504487. The next prime is 20341504549. The reversal of 20341504540 is 4540514302.

It is a super-3 number, since 3×20341504540³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 20341504499 and 20341504508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20341504549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72648091 + ... + 72648370.

It is an arithmetic number, because the mean of its divisors is an integer number (2034150468).

Almost surely, 2^20341504540 is an apocalyptic number.

20341504540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20341504540 is an abundant number, since it is smaller than the sum of its proper divisors (28478106692).

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

20341504540 is a wasteful number, since it uses less digits than its factorization.

20341504540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145296477 (or 145296475 counting only the distinct ones).

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

The spelling of 20341504540 in words is "twenty billion, three hundred forty-one million, five hundred four thousand, five hundred forty".