20416464521502 has 16 divisors (see below), whose sum is σ = 46666204620672. Its totient is φ = 5833275577560.

The previous prime is 20416464521443. The next prime is 20416464521521. The reversal of 20416464521502 is 20512546461402.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 486106298131 = 20416464521502 / (2 + 0 + 4 + 1 + 6 + 4 + 6 + 4 + 5 + 2 + 1 + 5 + 0 + 2).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243053149024 + ... + 243053149107.

It is an arithmetic number, because the mean of its divisors is an integer number (2916637788792).

Almost surely, 2^{20416464521502} is an apocalyptic number.

20416464521502 is an abundant number, since it is smaller than the sum of its proper divisors (26249740099170).

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

20416464521502 is a wasteful number, since it uses less digits than its factorization.

20416464521502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486106298143.

The product of its (nonzero) digits is 460800, while the sum is 42.

The spelling of 20416464521502 in words is "twenty trillion, four hundred sixteen billion, four hundred sixty-four million, five hundred twenty-one thousand, five hundred two".