20854546061650 has 72 divisors (see below), whose sum is σ = 45128367710100. Its totient is φ = 7149188874240.

The previous prime is 20854546061627. The next prime is 20854546061653. The reversal of 20854546061650 is 5616064545802.

It can be written as a sum of positive squares in 6 ways, for example, as 946824356401 + 19907721705249 = 973049^2 + 4461807^2 .

It is not an unprimeable number, because it can be changed into a prime (20854546061653) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 18183634 + ... + 19296466.

Almost surely, 2^{20854546061650} is an apocalyptic number.

20854546061650 is an abundant number, since it is smaller than the sum of its proper divisors (24273821648450).

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

20854546061650 is a wasteful number, since it uses less digits than its factorization.

20854546061650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120508 (or 1120496 counting only the distinct ones).

The product of its (nonzero) digits is 6912000, while the sum is 52.

The spelling of 20854546061650 in words is "twenty trillion, eight hundred fifty-four billion, five hundred forty-six million, sixty-one thousand, six hundred fifty".