107978754049 has 4 divisors (see below), whose sum is σ = 109748897620. Its totient is φ = 106208610480.

The previous prime is 107978754047. The next prime is 107978754161. The reversal of 107978754049 is 940457879701.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 940457879701 = 28513 ⋅32983477.

It can be written as a sum of positive squares in 2 ways, for example, as 40615147024 + 67363607025 = 201532^2 + 259545^2 .

It is a cyclic number.

It is not a de Polignac number, because 107978754049 - 2¹ = 107978754047 is a prime.

It is a super-2 number, since 2×107978754049² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (61), and also a Moran number because the ratio is a prime number: 1770143509 = 107978754049 / (1 + 0 + 7 + 9 + 7 + 8 + 7 + 5 + 4 + 0 + 4 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (107978754041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 885071694 + ... + 885071815.

It is an arithmetic number, because the mean of its divisors is an integer number (27437224405).

Almost surely, 2^107978754049 is an apocalyptic number.

It is an amenable number.

107978754049 is a deficient number, since it is larger than the sum of its proper divisors (1770143571).

107978754049 is an equidigital number, since it uses as much as digits as its factorization.

107978754049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1770143570.

The product of its (nonzero) digits is 17781120, while the sum is 61.

The spelling of 107978754049 in words is "one hundred seven billion, nine hundred seventy-eight million, seven hundred fifty-four thousand, forty-nine".