818074378464 has 96 divisors (see below), whose sum is σ = 2454598734336. Its totient is φ = 233699765760.

The previous prime is 818074378447. The next prime is 818074378477. The reversal of 818074378464 is 464873470818.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 818074378398 and 818074378407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4467069 + ... + 4646595.

It is an arithmetic number, because the mean of its divisors is an integer number (25568736816).

Almost surely, 2^818074378464 is an apocalyptic number.

818074378464 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

818074378464 is an abundant number, since it is smaller than the sum of its proper divisors (1636524355872).

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

818074378464 is a wasteful number, since it uses less digits than its factorization.

818074378464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186328 (or 186320 counting only the distinct ones).

The product of its (nonzero) digits is 28901376, while the sum is 60.

The spelling of 818074378464 in words is "eight hundred eighteen billion, seventy-four million, three hundred seventy-eight thousand, four hundred sixty-four".