20353451012 has 12 divisors (see below), whose sum is σ = 35619747660. Its totient is φ = 10176380256.

The previous prime is 20353450969. The next prime is 20353451057. The reversal of 20353451012 is 21015435302.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13626826756 + 6726624256 = 116734^2 + 82016^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83414 + ... + 218322.

It is an arithmetic number, because the mean of its divisors is an integer number (2968312305).

Almost surely, 2^20353451012 is an apocalyptic number.

It is an amenable number.

20353451012 is a deficient number, since it is larger than the sum of its proper divisors (15266296648).

20353451012 is a wasteful number, since it uses less digits than its factorization.

20353451012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172630 (or 172628 counting only the distinct ones).

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

Adding to 20353451012 its reverse (21015435302), we get a palindrome (41368886314).

The spelling of 20353451012 in words is "twenty billion, three hundred fifty-three million, four hundred fifty-one thousand, twelve".