20835678061844 has 6 divisors (see below), whose sum is σ = 36462436608234. Its totient is φ = 10417839030920.

The previous prime is 20835678061829. The next prime is 20835678061859. The reversal of 20835678061844 is 44816087653802.

It is an interprime number because it is at equal distance from previous prime (20835678061829) and next prime (20835678061859).

It can be written as a sum of positive squares in only one way, i.e., 16736591917444 + 4099086144400 = 4091038^2 + 2024620^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2604459757727 + ... + 2604459757734.

It is an arithmetic number, because the mean of its divisors is an integer number (6077072768039).

Almost surely, 2^{20835678061844} is an apocalyptic number.

It is an amenable number.

20835678061844 is a deficient number, since it is larger than the sum of its proper divisors (15626758546390).

20835678061844 is a wasteful number, since it uses less digits than its factorization.

20835678061844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5208919515465 (or 5208919515463 counting only the distinct ones).

The product of its (nonzero) digits is 61931520, while the sum is 62.

The spelling of 20835678061844 in words is "twenty trillion, eight hundred thirty-five billion, six hundred seventy-eight million, sixty-one thousand, eight hundred forty-four".