854315815780 has 48 divisors (see below), whose sum is σ = 2053546911360. Its totient is φ = 292452715008.

The previous prime is 854315815777. The next prime is 854315815783. The reversal of 854315815780 is 87518513458.

It is an interprime number because it is at equal distance from previous prime (854315815777) and next prime (854315815783).

It is not an unprimeable number, because it can be changed into a prime (854315815783) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4655125 + ... + 4835164.

It is an arithmetic number, because the mean of its divisors is an integer number (42782227320).

Almost surely, 2^854315815780 is an apocalyptic number.

It is an amenable number.

854315815780 is an abundant number, since it is smaller than the sum of its proper divisors (1199231095580).

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

854315815780 is a wasteful number, since it uses less digits than its factorization.

854315815780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9490948 (or 9490946 counting only the distinct ones).

The product of its (nonzero) digits is 5376000, while the sum is 55.

The spelling of 854315815780 in words is "eight hundred fifty-four billion, three hundred fifteen million, eight hundred fifteen thousand, seven hundred eighty".