20612530320061 has 32 divisors (see below), whose sum is σ = 22290701506560. Its totient is φ = 18989025350400.

The previous prime is 20612530320059. The next prime is 20612530320103. The reversal of 20612530320061 is 16002303521602.

It is a happy number.

It is not a de Polignac number, because 20612530320061 - 2¹ = 20612530320059 is a prime.

It is a super-3 number, since 3×20612530320061³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20612530323061) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 453089526 + ... + 453135016.

It is an arithmetic number, because the mean of its divisors is an integer number (696584422080).

Almost surely, 2^{20612530320061} is an apocalyptic number.

It is an amenable number.

20612530320061 is a deficient number, since it is larger than the sum of its proper divisors (1678171186499).

20612530320061 is a wasteful number, since it uses less digits than its factorization.

20612530320061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47505.

The product of its (nonzero) digits is 12960, while the sum is 31.

Adding to 20612530320061 its reverse (16002303521602), we get a palindrome (36614833841663).

The spelling of 20612530320061 in words is "twenty trillion, six hundred twelve billion, five hundred thirty million, three hundred twenty thousand, sixty-one".