20355061373660 has 72 divisors (see below), whose sum is σ = 48299151731040. Its totient is φ = 7188944725248.

The previous prime is 20355061373659. The next prime is 20355061373663. The reversal of 20355061373660 is 6637316055302.

It is a happy number.

It is a super-3 number, since 3×20355061373660³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20355061373663) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 130839815 + ... + 130995294.

It is an arithmetic number, because the mean of its divisors is an integer number (670821551820).

Almost surely, 2^{20355061373660} is an apocalyptic number.

20355061373660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20355061373660 is an abundant number, since it is smaller than the sum of its proper divisors (27944090357380).

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

20355061373660 is a wasteful number, since it uses less digits than its factorization.

20355061373660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261835167 (or 261835152 counting only the distinct ones).

The product of its (nonzero) digits is 2041200, while the sum is 47.

The spelling of 20355061373660 in words is "twenty trillion, three hundred fifty-five billion, sixty-one million, three hundred seventy-three thousand, six hundred sixty".