201021069710544 has 160 divisors (see below), whose sum is σ = 546108237692928. Its totient is φ = 63634465728000.

The previous prime is 201021069710501. The next prime is 201021069710567. The reversal of 201021069710544 is 445017960120102.

It is a junction number, because it is equal to n+sod(n) for n = 201021069710496 and 201021069710505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36551787 + ... + 41690229.

Almost surely, 2^{201021069710544} is an apocalyptic number.

201021069710544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201021069710544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273054118846464).

201021069710544 is an abundant number, since it is smaller than the sum of its proper divisors (345087167982384).

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

201021069710544 is a wasteful number, since it uses less digits than its factorization.

201021069710544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5138977 (or 5138971 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 201021069710544 in words is "two hundred one trillion, twenty-one billion, sixty-nine million, seven hundred ten thousand, five hundred forty-four".