20154311298 has 160 divisors (see below), whose sum is σ = 50535733248. Its totient is φ = 5951167200.

The previous prime is 20154311227. The next prime is 20154311299. The reversal of 20154311298 is 89211345102.

20154311298 is a `hidden beast` number, since 2 + 0 + 1 + 54 + 311 + 298 = 666.

It is not an unprimeable number, because it can be changed into a prime (20154311299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 27722211 + ... + 27722937.

Almost surely, 2^20154311298 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20154311298, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25267866624).

20154311298 is an abundant number, since it is smaller than the sum of its proper divisors (30381421950).

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

20154311298 is a wasteful number, since it uses less digits than its factorization.

20154311298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130 (or 1121 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The spelling of 20154311298 in words is "twenty billion, one hundred fifty-four million, three hundred eleven thousand, two hundred ninety-eight".