78380416413 has 12 divisors (see below), whose sum is σ = 121925092380. Its totient is φ = 48234102336.

The previous prime is 78380416409. The next prime is 78380416423. The reversal of 78380416413 is 31461408387.

It can be written as a sum of positive squares in 2 ways, for example, as 4111630884 + 74268785529 = 64122^2 + 272523^2 .

It is not a de Polignac number, because 78380416413 - 2² = 78380416409 is a prime.

It is a super-2 number, since 2×78380416413² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78380416423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 334958928 + ... + 334959161.

It is an arithmetic number, because the mean of its divisors is an integer number (10160424365).

Almost surely, 2^78380416413 is an apocalyptic number.

It is an amenable number.

78380416413 is a deficient number, since it is larger than the sum of its proper divisors (43544675967).

78380416413 is a wasteful number, since it uses less digits than its factorization.

78380416413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669918108 (or 669918105 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 78380416413 in words is "seventy-eight billion, three hundred eighty million, four hundred sixteen thousand, four hundred thirteen".