154981016123 has 8 divisors (see below), whose sum is σ = 157180785120. Its totient is φ = 152781717760.

The previous prime is 154981016119. The next prime is 154981016131. The reversal of 154981016123 is 321610189451.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 154981016123 - 2² = 154981016119 is a prime.

It is a super-2 number, since 2×154981016123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154981016423) by changing a digit.

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, 574283 + ... + 799851.

It is an arithmetic number, because the mean of its divisors is an integer number (19647598140).

Almost surely, 2^154981016123 is an apocalyptic number.

154981016123 is a deficient number, since it is larger than the sum of its proper divisors (2199768997).

154981016123 is an equidigital number, since it uses as much as digits as its factorization.

154981016123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235317.

The product of its (nonzero) digits is 51840, while the sum is 41.

The spelling of 154981016123 in words is "one hundred fifty-four billion, nine hundred eighty-one million, sixteen thousand, one hundred twenty-three".