20573685734 has 16 divisors (see below), whose sum is σ = 35273664000. Its totient is φ = 8816171784.

The previous prime is 20573685647. The next prime is 20573685739. The reversal of 20573685734 is 43758637502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20573685739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25667 + ... + 204465.

It is an arithmetic number, because the mean of its divisors is an integer number (2204604000).

Almost surely, 2^20573685734 is an apocalyptic number.

20573685734 is a deficient number, since it is larger than the sum of its proper divisors (14699978266).

20573685734 is a wasteful number, since it uses less digits than its factorization.

20573685734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187027.

The product of its (nonzero) digits is 4233600, while the sum is 50.

The spelling of 20573685734 in words is "twenty billion, five hundred seventy-three million, six hundred eighty-five thousand, seven hundred thirty-four".