20013612234 has 72 divisors (see below), whose sum is σ = 51180119424. Its totient is φ = 5198331600.

The previous prime is 20013612217. The next prime is 20013612263. The reversal of 20013612234 is 43221631002.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 245722 + ... + 316869.

It is an arithmetic number, because the mean of its divisors is an integer number (710834992).

Almost surely, 2^20013612234 is an apocalyptic number.

20013612234 is an abundant number, since it is smaller than the sum of its proper divisors (31166507190).

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

20013612234 is a wasteful number, since it uses less digits than its factorization.

20013612234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562632 (or 562614 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The spelling of 20013612234 in words is "twenty billion, thirteen million, six hundred twelve thousand, two hundred thirty-four".