2078451608065 has 8 divisors (see below), whose sum is σ = 2850447919680. Its totient is φ = 1425223959792.

The previous prime is 2078451608059. The next prime is 2078451608071. The reversal of 2078451608065 is 5608061548702.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2078451608059) and next prime (2078451608071).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2078451608065 is a prime.

It is a super-2 number, since 2×2078451608065² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29692165795 + ... + 29692165864.

It is an arithmetic number, because the mean of its divisors is an integer number (356305989960).

Almost surely, 2^{2078451608065} is an apocalyptic number.

It is an amenable number.

2078451608065 is a deficient number, since it is larger than the sum of its proper divisors (771996311615).

2078451608065 is an equidigital number, since it uses as much as digits as its factorization.

2078451608065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59384331671.

The product of its (nonzero) digits is 3225600, while the sum is 52.

The spelling of 2078451608065 in words is "two trillion, seventy-eight billion, four hundred fifty-one million, six hundred eight thousand, sixty-five".