384867777440 has 48 divisors (see below), whose sum is σ = 910175470848. Its totient is φ = 153790438656.

The previous prime is 384867777439. The next prime is 384867777449. The reversal of 384867777440 is 44777768483.

It is a super-2 number, since 2×384867777440² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (384867777449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1066232 + ... + 1380791.

It is an arithmetic number, because the mean of its divisors is an integer number (18961988976).

Almost surely, 2^384867777440 is an apocalyptic number.

It is an amenable number.

384867777440 is an abundant number, since it is smaller than the sum of its proper divisors (525307693408).

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

384867777440 is a wasteful number, since it uses less digits than its factorization.

384867777440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2448021 (or 2448013 counting only the distinct ones).

The product of its (nonzero) digits is 177020928, while the sum is 65.

The spelling of 384867777440 in words is "three hundred eighty-four billion, eight hundred sixty-seven million, seven hundred seventy-seven thousand, four hundred forty".