20154203120 has 40 divisors (see below), whose sum is σ = 49614909264. Its totient is φ = 7587464192.

The previous prime is 20154203107. The next prime is 20154203131. The reversal of 20154203120 is 2130245102.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 20154203092 and 20154203101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7408274 + ... + 7410993.

Almost surely, 2^20154203120 is an apocalyptic number.

20154203120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20154203120 is an abundant number, since it is smaller than the sum of its proper divisors (29460706144).

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

20154203120 is a wasteful number, since it uses less digits than its factorization.

20154203120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14819297 (or 14819291 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 20154203120 its reverse (2130245102), we get a palindrome (22284448222).

The spelling of 20154203120 in words is "twenty billion, one hundred fifty-four million, two hundred three thousand, one hundred twenty".