20154311334 has 24 divisors (see below), whose sum is σ = 43670301480. Its totient is φ = 6717699648.

The previous prime is 20154311321. The next prime is 20154311357. The reversal of 20154311334 is 43311345102.

It is a happy number.

20154311334 is a `hidden beast` number, since 2 + 0 + 1 + 543 + 113 + 3 + 4 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 20154311298 and 20154311307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 518862 + ... + 556350.

It is an arithmetic number, because the mean of its divisors is an integer number (1819595895).

Almost surely, 2^20154311334 is an apocalyptic number.

20154311334 is an abundant number, since it is smaller than the sum of its proper divisors (23515990146).

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

20154311334 is a wasteful number, since it uses less digits than its factorization.

20154311334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67364 (or 67361 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 20154311334 its reverse (43311345102), we get a palindrome (63465656436).

The spelling of 20154311334 in words is "twenty billion, one hundred fifty-four million, three hundred eleven thousand, three hundred thirty-four".