312805946880 has 640 divisors, whose sum is σ = 1325100902400. Its totient is φ = 68387438592.

The previous prime is 312805946771. The next prime is 312805946881. The reversal of 312805946880 is 88649508213.

312805946880 is a `hidden beast` number, since 3 + 128 + 0 + 59 + 468 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (640).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312805946881) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11114266 + ... + 11142374.

It is an arithmetic number, because the mean of its divisors is an integer number (2070470160).

Almost surely, 2^312805946880 is an apocalyptic number.

312805946880 is a gapful number since it is divisible by the number (30) 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 312805946880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (662550451200).

312805946880 is an abundant number, since it is smaller than the sum of its proper divisors (1012294955520).

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

312805946880 is a wasteful number, since it uses less digits than its factorization.

312805946880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28171 (or 28149 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 54.

The spelling of 312805946880 in words is "three hundred twelve billion, eight hundred five million, nine hundred forty-six thousand, eight hundred eighty".