154689421536 has 288 divisors, whose sum is σ = 500515666560. Its totient is φ = 44976218112.

The previous prime is 154689421517. The next prime is 154689421541. The reversal of 154689421536 is 635124986451.

154689421536 is a `hidden beast` number, since 1 + 5 + 4 + 6 + 89 + 4 + 21 + 536 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5087916 + ... + 5118228.

It is an arithmetic number, because the mean of its divisors is an integer number (1737901620).

Almost surely, 2^154689421536 is an apocalyptic number.

154689421536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 154689421536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (250257833280).

154689421536 is an abundant number, since it is smaller than the sum of its proper divisors (345826245024).

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

154689421536 is a wasteful number, since it uses less digits than its factorization.

154689421536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30418 (or 30407 counting only the distinct ones).

The product of its digits is 6220800, while the sum is 54.

The spelling of 154689421536 in words is "one hundred fifty-four billion, six hundred eighty-nine million, four hundred twenty-one thousand, five hundred thirty-six".