20147663206660 has 48 divisors (see below), whose sum is σ = 46359797359680. Its totient is φ = 7294147975040.

The previous prime is 20147663206651. The next prime is 20147663206663. The reversal of 20147663206660 is 6660236674102.

It is a happy number.

It is a super-2 number, since 2×20147663206660² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20147663206663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 201668755 + ... + 201768634.

It is an arithmetic number, because the mean of its divisors is an integer number (965829111660).

Almost surely, 2^{20147663206660} is an apocalyptic number.

20147663206660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20147663206660 is an abundant number, since it is smaller than the sum of its proper divisors (26212134153020).

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

20147663206660 is a wasteful number, since it uses less digits than its factorization.

20147663206660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403437636 (or 403437634 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 49.

The spelling of 20147663206660 in words is "twenty trillion, one hundred forty-seven billion, six hundred sixty-three million, two hundred six thousand, six hundred sixty".