4278930691249 has 4 divisors (see below), whose sum is σ = 4426480025460. Its totient is φ = 4131381357040.

The previous prime is 4278930691213. The next prime is 4278930691279. The reversal of 4278930691249 is 9421960398724.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1767995715600 + 2510934975649 = 1329660^2 + 1584593^2 .

It is a cyclic number.

It is not a de Polignac number, because 4278930691249 - 2⁷ = 4278930691121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4278930691279) 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, 73774667062 + ... + 73774667119.

It is an arithmetic number, because the mean of its divisors is an integer number (1106620006365).

Almost surely, 2^{4278930691249} is an apocalyptic number.

It is an amenable number.

4278930691249 is a deficient number, since it is larger than the sum of its proper divisors (147549334211).

4278930691249 is a wasteful number, since it uses less digits than its factorization.

4278930691249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147549334210.

The product of its (nonzero) digits is 47029248, while the sum is 64.

The spelling of 4278930691249 in words is "four trillion, two hundred seventy-eight billion, nine hundred thirty million, six hundred ninety-one thousand, two hundred forty-nine".