20003520336870 has 32 divisors (see below), whose sum is σ = 54866798638848. Its totient is φ = 4572233219808.

The previous prime is 20003520336869. The next prime is 20003520336911. The reversal of 20003520336870 is 7863302530002.

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, 47627429164 + ... + 47627429583.

It is an arithmetic number, because the mean of its divisors is an integer number (1714587457464).

Almost surely, 2^{20003520336870} is an apocalyptic number.

20003520336870 is an abundant number, since it is smaller than the sum of its proper divisors (34863278301978).

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

20003520336870 is a wasteful number, since it uses less digits than its factorization.

20003520336870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95254858764.

The product of its (nonzero) digits is 181440, while the sum is 39.

Adding to 20003520336870 its reverse (7863302530002), we get a palindrome (27866822866872).

The spelling of 20003520336870 in words is "twenty trillion, three billion, five hundred twenty million, three hundred thirty-six thousand, eight hundred seventy".