20247624720016 has 80 divisors (see below), whose sum is σ = 40071082273200. Its totient is φ = 9908869791744.

The previous prime is 20247624720007. The next prime is 20247624720019. The reversal of 20247624720016 is 61002742674202.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 311364000000 + 19936260720016 = 558000^2 + 4465004^2 .

It is not an unprimeable number, because it can be changed into a prime (20247624720019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 507070740 + ... + 507110668.

It is an arithmetic number, because the mean of its divisors is an integer number (500888528415).

Almost surely, 2^{20247624720016} is an apocalyptic number.

It is an amenable number.

20247624720016 is a deficient number, since it is larger than the sum of its proper divisors (19823457553184).

20247624720016 is a wasteful number, since it uses less digits than its factorization.

20247624720016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43316 (or 43310 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 43.

The spelling of 20247624720016 in words is "twenty trillion, two hundred forty-seven billion, six hundred twenty-four million, seven hundred twenty thousand, sixteen".