78300648949 has 4 divisors (see below), whose sum is σ = 78301531936. Its totient is φ = 78299765964.

The previous prime is 78300648869. The next prime is 78300648967. The reversal of 78300648949 is 94984600387.

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, and also an emirpimes, since its reverse is a distinct semiprime: 94984600387 = 137 ⋅693318251.

It is a cyclic number.

It is not a de Polignac number, because 78300648949 - 2⁷ = 78300648821 is a prime.

It is a super-2 number, since 2×78300648949² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78300648893 and 78300648902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78300678949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 291489 + ... + 491494.

It is an arithmetic number, because the mean of its divisors is an integer number (19575382984).

Almost surely, 2^78300648949 is an apocalyptic number.

It is an amenable number.

78300648949 is a deficient number, since it is larger than the sum of its proper divisors (882987).

78300648949 is a wasteful number, since it uses less digits than its factorization.

78300648949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882986.

The product of its (nonzero) digits is 10450944, while the sum is 58.

The spelling of 78300648949 in words is "seventy-eight billion, three hundred million, six hundred forty-eight thousand, nine hundred forty-nine".