1078373675821 has 8 divisors (see below), whose sum is σ = 1161387991064. Its totient is φ = 995368288320.

The previous prime is 1078373675791. The next prime is 1078373675849. The reversal of 1078373675821 is 1285763738701.

1078373675821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 11677179721 + 1066696496100 = 108061^2 + 1032810^2 .

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 1078373675821 - 2⁵ = 1078373675789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1078373679821) 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, 1980006 + ... + 2465191.

It is an arithmetic number, because the mean of its divisors is an integer number (145173498883).

Almost surely, 2^{1078373675821} is an apocalyptic number.

It is an amenable number.

1078373675821 is a deficient number, since it is larger than the sum of its proper divisors (83014315243).

1078373675821 is a wasteful number, since it uses less digits than its factorization.

1078373675821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4463871.

The product of its (nonzero) digits is 11854080, while the sum is 58.

The spelling of 1078373675821 in words is "one trillion, seventy-eight billion, three hundred seventy-three million, six hundred seventy-five thousand, eight hundred twenty-one".