20035053833721 has 16 divisors (see below), whose sum is σ = 27305437211904. Its totient is φ = 13061179459584.

The previous prime is 20035053833713. The next prime is 20035053833747. The reversal of 20035053833721 is 12733835053002.

It is a happy number.

It is not a de Polignac number, because 20035053833721 - 2³ = 20035053833713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20035051833721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61456066 + ... + 61781211.

It is an arithmetic number, because the mean of its divisors is an integer number (1706589825744).

Almost surely, 2^{20035053833721} is an apocalyptic number.

It is an amenable number.

20035053833721 is a deficient number, since it is larger than the sum of its proper divisors (7270383378183).

20035053833721 is a wasteful number, since it uses less digits than its factorization.

20035053833721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123238480.

The product of its (nonzero) digits is 453600, while the sum is 42.

Adding to 20035053833721 its reverse (12733835053002), we get a palindrome (32768888886723).

The spelling of 20035053833721 in words is "twenty trillion, thirty-five billion, fifty-three million, eight hundred thirty-three thousand, seven hundred twenty-one".