20202420502 has 16 divisors (see below), whose sum is σ = 33177861072. Its totient is φ = 9149764320.

The previous prime is 20202420457. The next prime is 20202420517. The reversal of 20202420502 is 20502420202.

It is a self number, because there is not a number n which added to its sum of digits gives 20202420502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1651473 + ... + 1663660.

It is an arithmetic number, because the mean of its divisors is an integer number (2073616317).

Almost surely, 2^20202420502 is an apocalyptic number.

20202420502 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20202420502 is a deficient number, since it is larger than the sum of its proper divisors (12975440570).

20202420502 is a wasteful number, since it uses less digits than its factorization.

20202420502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3315423.

The product of its (nonzero) digits is 640, while the sum is 19.

Adding to 20202420502 its reverse (20502420202), we get a palindrome (40704840704).

The spelling of 20202420502 in words is "twenty billion, two hundred two million, four hundred twenty thousand, five hundred two".