854515533420 has 192 divisors, whose sum is σ = 2695905072000. Its totient is φ = 224686448640.

The previous prime is 854515533419. The next prime is 854515533527. The reversal of 854515533420 is 24335515458.

It is a happy number.

854515533420 is a `hidden beast` number, since 8 + 5 + 4 + 51 + 553 + 3 + 42 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 63 ways as a sum of consecutive naturals, for example, 10984260 + ... + 11061780.

It is an arithmetic number, because the mean of its divisors is an integer number (14041172250).

Almost surely, 2^854515533420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 854515533420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1347952536000).

854515533420 is an abundant number, since it is smaller than the sum of its proper divisors (1841389538580).

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

854515533420 is a wasteful number, since it uses less digits than its factorization.

854515533420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77825 (or 77817 counting only the distinct ones).

The product of its (nonzero) digits is 1440000, while the sum is 45.

The spelling of 854515533420 in words is "eight hundred fifty-four billion, five hundred fifteen million, five hundred thirty-three thousand, four hundred twenty".