20450015665652 has 48 divisors (see below), whose sum is σ = 37219408396800. Its totient is φ = 9819742907520.

The previous prime is 20450015665637. The next prime is 20450015665691. The reversal of 20450015665652 is 25656651005402.

It is a junction number, because it is equal to n+sod(n) for n = 20450015665597 and 20450015665606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29953874 + ... + 30628982.

It is an arithmetic number, because the mean of its divisors is an integer number (775404341600).

Almost surely, 2^{20450015665652} is an apocalyptic number.

It is an amenable number.

20450015665652 is a deficient number, since it is larger than the sum of its proper divisors (16769392731148).

20450015665652 is a wasteful number, since it uses less digits than its factorization.

20450015665652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676536 (or 676534 counting only the distinct ones).

The product of its (nonzero) digits is 2160000, while the sum is 47.

The spelling of 20450015665652 in words is "twenty trillion, four hundred fifty billion, fifteen million, six hundred sixty-five thousand, six hundred fifty-two".