20783270652534 has 96 divisors (see below), whose sum is σ = 51378595972704. Its totient is φ = 6014969902080.

The previous prime is 20783270652523. The next prime is 20783270652593. The reversal of 20783270652534 is 43525607238702.

20783270652534 is a `hidden beast` number, since 2 + 0 + 7 + 8 + 32 + 70 + 6 + 5 + 2 + 534 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4836817 + ... + 8059859.

It is an arithmetic number, because the mean of its divisors is an integer number (535193708049).

Almost surely, 2^{20783270652534} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20783270652534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25689297986352).

20783270652534 is an abundant number, since it is smaller than the sum of its proper divisors (30595325320170).

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

20783270652534 is a wasteful number, since it uses less digits than its factorization.

20783270652534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3224702 (or 3224699 counting only the distinct ones).

The product of its (nonzero) digits is 16934400, while the sum is 54.

The spelling of 20783270652534 in words is "twenty trillion, seven hundred eighty-three billion, two hundred seventy million, six hundred fifty-two thousand, five hundred thirty-four".