20520511242412 has 48 divisors (see below), whose sum is σ = 37444857956352. Its totient is φ = 9831111675840.

The previous prime is 20520511242403. The next prime is 20520511242437. The reversal of 20520511242412 is 21424211502502.

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 15 ways as a sum of consecutive naturals, for example, 63166837 + ... + 63490867.

It is an arithmetic number, because the mean of its divisors is an integer number (780101207424).

Almost surely, 2^{20520511242412} is an apocalyptic number.

It is an amenable number.

20520511242412 is a deficient number, since it is larger than the sum of its proper divisors (16924346713940).

20520511242412 is a wasteful number, since it uses less digits than its factorization.

20520511242412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331078 (or 331076 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 31.

Adding to 20520511242412 its reverse (21424211502502), we get a palindrome (41944722744914).

The spelling of 20520511242412 in words is "twenty trillion, five hundred twenty billion, five hundred eleven million, two hundred forty-two thousand, four hundred twelve".