154131431550 has 96 divisors (see below), whose sum is σ = 397637942400. Its totient is φ = 39462514560.

The previous prime is 154131431459. The next prime is 154131431563. The reversal of 154131431550 is 55134131451.

It is a happy number.

154131431550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 679677 + ... + 877623.

It is an arithmetic number, because the mean of its divisors is an integer number (4142061900).

Almost surely, 2^154131431550 is an apocalyptic number.

154131431550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 154131431550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198818971200).

154131431550 is an abundant number, since it is smaller than the sum of its proper divisors (243506510850).

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

154131431550 is a wasteful number, since it uses less digits than its factorization.

154131431550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198170 (or 198165 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 33.

The spelling of 154131431550 in words is "one hundred fifty-four billion, one hundred thirty-one million, four hundred thirty-one thousand, five hundred fifty".