20540734576 has 20 divisors (see below), whose sum is σ = 40391670472. Its totient is φ = 10117077696.

The previous prime is 20540734573. The next prime is 20540734579. The reversal of 20540734576 is 67543704502.

It is an interprime number because it is at equal distance from previous prime (20540734573) and next prime (20540734579).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20540734573) 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, 9579495 + ... + 9581638.

Almost surely, 2^20540734576 is an apocalyptic number.

It is an amenable number.

20540734576 is a deficient number, since it is larger than the sum of its proper divisors (19850935896).

20540734576 is a wasteful number, since it uses less digits than its factorization.

20540734576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19161208 (or 19161202 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 43.

The spelling of 20540734576 in words is "twenty billion, five hundred forty million, seven hundred thirty-four thousand, five hundred seventy-six".