20144235770 has 16 divisors (see below), whose sum is σ = 36462195360. Its totient is φ = 8012678544.

The previous prime is 20144235739. The next prime is 20144235781. The reversal of 20144235770 is 7753244102.

It is a self number, because there is not a number n which added to its sum of digits gives 20144235770.

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, 5625092 + ... + 5628671.

It is an arithmetic number, because the mean of its divisors is an integer number (2278887210).

Almost surely, 2^20144235770 is an apocalyptic number.

20144235770 is a deficient number, since it is larger than the sum of its proper divisors (16317959590).

20144235770 is a wasteful number, since it uses less digits than its factorization.

20144235770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11253949.

The product of its (nonzero) digits is 47040, while the sum is 35.

Adding to 20144235770 its reverse (7753244102), we get a palindrome (27897479872).

The spelling of 20144235770 in words is "twenty billion, one hundred forty-four million, two hundred thirty-five thousand, seven hundred seventy".