20739011307684 has 24 divisors (see below), whose sum is σ = 49952027236608. Its totient is φ = 6690003647520.

The previous prime is 20739011307673. The next prime is 20739011307691. The reversal of 20739011307684 is 48670311093702.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27875014827 + ... + 27875015570.

It is an arithmetic number, because the mean of its divisors is an integer number (2081334468192).

Almost surely, 2^{20739011307684} is an apocalyptic number.

It is an amenable number.

20739011307684 is an abundant number, since it is smaller than the sum of its proper divisors (29213015928924).

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

20739011307684 is a wasteful number, since it uses less digits than its factorization.

20739011307684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55750030435 (or 55750030433 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 51.

The spelling of 20739011307684 in words is "twenty trillion, seven hundred thirty-nine billion, eleven million, three hundred seven thousand, six hundred eighty-four".