320049377280 has 260 divisors, whose sum is σ = 1147302164712. Its totient is φ = 85346058240.

The previous prime is 320049377251. The next prime is 320049377281. The reversal of 320049377280 is 82773940023.

320049377280 is a `hidden beast` number, since 320 + 0 + 49 + 3 + 7 + 7 + 280 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320049377281) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1562415 + ... + 1755345.

Almost surely, 2^320049377280 is an apocalyptic number.

320049377280 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 320049377280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (573651082356).

320049377280 is an abundant number, since it is smaller than the sum of its proper divisors (827252787432).

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

320049377280 is an equidigital number, since it uses as much as digits as its factorization.

320049377280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192972 (or 192941 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 45.

The spelling of 320049377280 in words is "three hundred twenty billion, forty-nine million, three hundred seventy-seven thousand, two hundred eighty".