7430778040849 has 4 divisors (see below), whose sum is σ = 7430784155136. Its totient is φ = 7430771926564.

The previous prime is 7430778040793. The next prime is 7430778040867. The reversal of 7430778040849 is 9480408770347.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 7430778040849 - 2¹⁵ = 7430778008081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7430778040249) 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, 547369 + ... + 3893734.

It is an arithmetic number, because the mean of its divisors is an integer number (1857696038784).

Almost surely, 2^{7430778040849} is an apocalyptic number.

It is an amenable number.

7430778040849 is a deficient number, since it is larger than the sum of its proper divisors (6114287).

7430778040849 is a wasteful number, since it uses less digits than its factorization.

7430778040849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6114286.

The product of its (nonzero) digits is 37933056, while the sum is 61.

The spelling of 7430778040849 in words is "seven trillion, four hundred thirty billion, seven hundred seventy-eight million, forty thousand, eight hundred forty-nine".