64418205378811 has 8 divisors (see below), whose sum is σ = 65474805246048. Its totient is φ = 63361623696000.

The previous prime is 64418205378763. The next prime is 64418205378941. The reversal of 64418205378811 is 11887350281446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64418205378811 - 2¹⁵ = 64418205346043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64418205378311) 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, 2690691 + ... + 11665171.

It is an arithmetic number, because the mean of its divisors is an integer number (8184350655756).

Almost surely, 2^{64418205378811} is an apocalyptic number.

64418205378811 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

64418205378811 is a deficient number, since it is larger than the sum of its proper divisors (1056599867237).

64418205378811 is a wasteful number, since it uses less digits than its factorization.

64418205378811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9092213.

The product of its (nonzero) digits is 10321920, while the sum is 58.

The spelling of 64418205378811 in words is "sixty-four trillion, four hundred eighteen billion, two hundred five million, three hundred seventy-eight thousand, eight hundred eleven".