20736536742 has 48 divisors (see below), whose sum is σ = 47093050368. Its totient is φ = 6581971440.

The previous prime is 20736536741. The next prime is 20736536791. The reversal of 20736536742 is 24763563702.

20736536742 is a `hidden beast` number, since 2 + 0 + 73 + 6 + 536 + 7 + 42 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20736536741) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19984 + ... + 204627.

It is an arithmetic number, because the mean of its divisors is an integer number (981105216).

Almost surely, 2^20736536742 is an apocalyptic number.

20736536742 is an abundant number, since it is smaller than the sum of its proper divisors (26356513626).

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

20736536742 is a wasteful number, since it uses less digits than its factorization.

20736536742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224865 (or 224862 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 45.

The spelling of 20736536742 in words is "twenty billion, seven hundred thirty-six million, five hundred thirty-six thousand, seven hundred forty-two".