20210787215652 has 24 divisors (see below), whose sum is σ = 51445640185632. Its totient is φ = 6124480974400.

The previous prime is 20210787215627. The next prime is 20210787215659. The reversal of 20210787215652 is 25651278701202.

It is not an unprimeable number, because it can be changed into a prime (20210787215659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76556012049 + ... + 76556012312.

It is an arithmetic number, because the mean of its divisors is an integer number (2143568341068).

Almost surely, 2^{20210787215652} is an apocalyptic number.

20210787215652 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20210787215652 is an abundant number, since it is smaller than the sum of its proper divisors (31234852969980).

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

20210787215652 is a wasteful number, since it uses less digits than its factorization.

20210787215652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153112024379 (or 153112024377 counting only the distinct ones).

The product of its (nonzero) digits is 940800, while the sum is 48.

The spelling of 20210787215652 in words is "twenty trillion, two hundred ten billion, seven hundred eighty-seven million, two hundred fifteen thousand, six hundred fifty-two".