20155233154 has 32 divisors (see below), whose sum is σ = 35250526080. Its totient is φ = 8463716352.

The previous prime is 20155233151. The next prime is 20155233169. The reversal of 20155233154 is 45133255102.

It is not an unprimeable number, because it can be changed into a prime (20155233151) 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, 552937 + ... + 588259.

It is an arithmetic number, because the mean of its divisors is an integer number (1101578940).

Almost surely, 2^20155233154 is an apocalyptic number.

20155233154 is a deficient number, since it is larger than the sum of its proper divisors (15095292926).

20155233154 is a wasteful number, since it uses less digits than its factorization.

20155233154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36154.

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 20155233154 its reverse (45133255102), we get a palindrome (65288488256).

The spelling of 20155233154 in words is "twenty billion, one hundred fifty-five million, two hundred thirty-three thousand, one hundred fifty-four".