1563650552020 has 12 divisors (see below), whose sum is σ = 3283666159284. Its totient is φ = 625460220800.

The previous prime is 1563650551963. The next prime is 1563650552119. The reversal of 1563650552020 is 202550563651.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 201696199236 + 1361954352784 = 449106^2 + 1167028^2 .

It is a super-3 number, since 3×1563650552020³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 39091263781 + ... + 39091263820.

It is an arithmetic number, because the mean of its divisors is an integer number (273638846607).

Almost surely, 2^{1563650552020} is an apocalyptic number.

1563650552020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1563650552020 is an abundant number, since it is smaller than the sum of its proper divisors (1720015607264).

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

1563650552020 is a wasteful number, since it uses less digits than its factorization.

1563650552020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78182527610 (or 78182527608 counting only the distinct ones).

The product of its (nonzero) digits is 270000, while the sum is 40.

The spelling of 1563650552020 in words is "one trillion, five hundred sixty-three billion, six hundred fifty million, five hundred fifty-two thousand, twenty".