20540462548 has 12 divisors (see below), whose sum is σ = 37185320340. Its totient is φ = 9916085312.

The previous prime is 20540462533. The next prime is 20540462549. The reversal of 20540462548 is 84526404502.

It can be written as a sum of positive squares in 2 ways, for example, as 8002733764 + 12537728784 = 89458^2 + 111972^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20540462548.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20540462549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88536361 + ... + 88536592.

It is an arithmetic number, because the mean of its divisors is an integer number (3098776695).

Almost surely, 2^20540462548 is an apocalyptic number.

It is an amenable number.

20540462548 is a deficient number, since it is larger than the sum of its proper divisors (16644857792).

20540462548 is a wasteful number, since it uses less digits than its factorization.

20540462548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177072986 (or 177072984 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 40.

The spelling of 20540462548 in words is "twenty billion, five hundred forty million, four hundred sixty-two thousand, five hundred forty-eight".