20035213145 has 8 divisors (see below), whose sum is σ = 24072426504. Its totient is φ = 16008056704.

The previous prime is 20035213111. The next prime is 20035213183. The reversal of 20035213145 is 54131253002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4000309504 + 16034903641 = 63248^2 + 126629^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20035213145 - 2¹⁰ = 20035212121 is a prime.

It is a Duffinian 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, 2509844 + ... + 2517813.

It is an arithmetic number, because the mean of its divisors is an integer number (3009053313).

Almost surely, 2^20035213145 is an apocalyptic number.

It is an amenable number.

20035213145 is a deficient number, since it is larger than the sum of its proper divisors (4037213359).

20035213145 is an equidigital number, since it uses as much as digits as its factorization.

20035213145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5028459.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 20035213145 its reverse (54131253002), we get a palindrome (74166466147).

The spelling of 20035213145 in words is "twenty billion, thirty-five million, two hundred thirteen thousand, one hundred forty-five".