855154768320 has 168 divisors, whose sum is σ = 2946342134736. Its totient is φ = 227656261632.

The previous prime is 855154768301. The next prime is 855154768331. The reversal of 855154768320 is 23867451558.

855154768320 is a `hidden beast` number, since 8 + 5 + 5 + 1 + 547 + 68 + 32 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1457479 + ... + 1958201.

It is an arithmetic number, because the mean of its divisors is an integer number (17537750802).

Almost surely, 2^855154768320 is an apocalyptic number.

855154768320 is a gapful number since it is divisible by the number (80) 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 855154768320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1473171067368).

855154768320 is an abundant number, since it is smaller than the sum of its proper divisors (2091187366416).

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

855154768320 is a wasteful number, since it uses less digits than its factorization.

855154768320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501339 (or 501326 counting only the distinct ones).

The product of its (nonzero) digits is 8064000, while the sum is 54.

The spelling of 855154768320 in words is "eight hundred fifty-five billion, one hundred fifty-four million, seven hundred sixty-eight thousand, three hundred twenty".