20520153324402 has 64 divisors (see below), whose sum is σ = 42213214592640. Its totient is φ = 6647322240000.

The previous prime is 20520153324323. The next prime is 20520153324413. The reversal of 20520153324402 is 20442335102502.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 13736874 + ... + 15157242.

It is an arithmetic number, because the mean of its divisors is an integer number (659581478010).

Almost surely, 2^{20520153324402} is an apocalyptic number.

20520153324402 is an abundant number, since it is smaller than the sum of its proper divisors (21693061268238).

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

20520153324402 is a wasteful number, since it uses less digits than its factorization.

20520153324402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1420859.

The product of its (nonzero) digits is 57600, while the sum is 33.

Adding to 20520153324402 its reverse (20442335102502), we get a palindrome (40962488426904).

The spelling of 20520153324402 in words is "twenty trillion, five hundred twenty billion, one hundred fifty-three million, three hundred twenty-four thousand, four hundred two".