78248281673377 has 8 divisors (see below), whose sum is σ = 79719950250152. Its totient is φ = 76782706963200.

The previous prime is 78248281673363. The next prime is 78248281673417. The reversal of 78248281673377 is 77337618284287.

It can be written as a sum of positive squares in 4 ways, for example, as 6103711183761 + 72144570489616 = 2470569^2 + 8493796^2 .

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 78248281673377 - 2⁷ = 78248281673249 is a prime.

It is a super-2 number, since 2×78248281673377² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78248281673357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1523440728 + ... + 1523492089.

It is an arithmetic number, because the mean of its divisors is an integer number (9964993781269).

Almost surely, 2^{78248281673377} is an apocalyptic number.

It is an amenable number.

78248281673377 is a deficient number, since it is larger than the sum of its proper divisors (1471668576775).

78248281673377 is a wasteful number, since it uses less digits than its factorization.

78248281673377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3046933299.

The product of its digits is 1062125568, while the sum is 73.

The spelling of 78248281673377 in words is "seventy-eight trillion, two hundred forty-eight billion, two hundred eighty-one million, six hundred seventy-three thousand, three hundred seventy-seven".