20540183740 has 24 divisors (see below), whose sum is σ = 43725270960. Its totient is φ = 8103523968.

The previous prime is 20540183707. The next prime is 20540183749. The reversal of 20540183740 is 4738104502.

It is a junction number, because it is equal to n+sod(n) for n = 20540183696 and 20540183705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20540183749) 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, 7032850 + ... + 7035769.

It is an arithmetic number, because the mean of its divisors is an integer number (1821886290).

Almost surely, 2^20540183740 is an apocalyptic number.

20540183740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20540183740 is an abundant number, since it is smaller than the sum of its proper divisors (23185087220).

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

20540183740 is a wasteful number, since it uses less digits than its factorization.

20540183740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14068701 (or 14068699 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The spelling of 20540183740 in words is "twenty billion, five hundred forty million, one hundred eighty-three thousand, seven hundred forty".