20748165206804 has 36 divisors (see below), whose sum is σ = 42237596147040. Its totient is φ = 8892016101360.

The previous prime is 20748165206773. The next prime is 20748165206831. The reversal of 20748165206804 is 40860256184702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61165337 + ... + 61503615.

It is an arithmetic number, because the mean of its divisors is an integer number (1173266559640).

Almost surely, 2^{20748165206804} is an apocalyptic number.

It is an amenable number.

20748165206804 is an abundant number, since it is smaller than the sum of its proper divisors (21489430940236).

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

20748165206804 is a wasteful number, since it uses less digits than its factorization.

20748165206804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651228 (or 651219 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 53.

The spelling of 20748165206804 in words is "twenty trillion, seven hundred forty-eight billion, one hundred sixty-five million, two hundred six thousand, eight hundred four".