78641462949378 has 32 divisors (see below), whose sum is σ = 179770384542336. Its totient is φ = 22466680760448.

The previous prime is 78641462949377. The next prime is 78641462949391. The reversal of 78641462949378 is 87394926414687.

It is not an unprimeable number, because it can be changed into a prime (78641462949377) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95780251 + ... + 96597822.

It is an arithmetic number, because the mean of its divisors is an integer number (5617824516948).

Almost surely, 2^{78641462949378} is an apocalyptic number.

78641462949378 is an abundant number, since it is smaller than the sum of its proper divisors (101128921592958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78641462949378 is a wasteful number, since it uses less digits than its factorization.

78641462949378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192387818.

The product of its digits is 3511517184, while the sum is 78.

The spelling of 78641462949378 in words is "seventy-eight trillion, six hundred forty-one billion, four hundred sixty-two million, nine hundred forty-nine thousand, three hundred seventy-eight".