1078699939799 has 8 divisors (see below), whose sum is σ = 1107879755808. Its totient is φ = 1049521479840.

The previous prime is 1078699939783. The next prime is 1078699939841. The reversal of 1078699939799 is 9979399968701.

It is a happy number.

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 1078699939799 - 2⁴ = 1078699939783 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1078699939799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1078699939729) 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, 1391294 + ... + 2023140.

It is an arithmetic number, because the mean of its divisors is an integer number (138484969476).

Almost surely, 2^{1078699939799} is an apocalyptic number.

1078699939799 is a deficient number, since it is larger than the sum of its proper divisors (29179816009).

1078699939799 is an equidigital number, since it uses as much as digits as its factorization.

1078699939799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678025.

The product of its (nonzero) digits is 3749847696, while the sum is 86.

The spelling of 1078699939799 in words is "one trillion, seventy-eight billion, six hundred ninety-nine million, nine hundred thirty-nine thousand, seven hundred ninety-nine".