155402424450 has 1152 divisors, whose sum is σ = 572528355840. Its totient is φ = 31039303680.

The previous prime is 155402424371. The next prime is 155402424493. The reversal of 155402424450 is 54424204551.

155402424450 is a `hidden beast` number, since 1 + 5 + 5 + 402 + 4 + 244 + 5 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 575 ways as a sum of consecutive naturals, for example, 1602086802 + ... + 1602086898.

It is an arithmetic number, because the mean of its divisors is an integer number (496986420).

Almost surely, 2^155402424450 is an apocalyptic number.

155402424450 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 155402424450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286264177920).

155402424450 is an abundant number, since it is smaller than the sum of its proper divisors (417125931390).

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

155402424450 is a wasteful number, since it uses less digits than its factorization.

155402424450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180 (or 150 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 36.

The spelling of 155402424450 in words is "one hundred fifty-five billion, four hundred two million, four hundred twenty-four thousand, four hundred fifty".