662381380784 has 20 divisors (see below), whose sum is σ = 1350909395640. Its totient is φ = 313759601280.

The previous prime is 662381380783. The next prime is 662381380819. The reversal of 662381380784 is 487083183266.

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (662381380783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1089442757 + ... + 1089443364.

It is an arithmetic number, because the mean of its divisors is an integer number (67545469782).

Almost surely, 2^662381380784 is an apocalyptic number.

It is an amenable number.

662381380784 is an abundant number, since it is smaller than the sum of its proper divisors (688528014856).

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

662381380784 is a wasteful number, since it uses less digits than its factorization.

662381380784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2178886148 (or 2178886142 counting only the distinct ones).

The product of its (nonzero) digits is 9289728, while the sum is 56.

The spelling of 662381380784 in words is "six hundred sixty-two billion, three hundred eighty-one million, three hundred eighty thousand, seven hundred eighty-four".