20353515234 has 32 divisors (see below), whose sum is σ = 46417069440. Its totient is φ = 5894230272.

The previous prime is 20353515233. The next prime is 20353515239. The reversal of 20353515234 is 43251535302.

It is a junction number, because it is equal to n+sod(n) for n = 20353515195 and 20353515204.

It is not an unprimeable number, because it can be changed into a prime (20353515233) 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, 7673454 + ... + 7676105.

It is an arithmetic number, because the mean of its divisors is an integer number (1450533420).

Almost surely, 2^20353515234 is an apocalyptic number.

20353515234 is an abundant number, since it is smaller than the sum of its proper divisors (26063554206).

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

20353515234 is a wasteful number, since it uses less digits than its factorization.

20353515234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15349594.

The product of its (nonzero) digits is 54000, while the sum is 33.

The spelling of 20353515234 in words is "twenty billion, three hundred fifty-three million, five hundred fifteen thousand, two hundred thirty-four".