78401341228 has 36 divisors (see below), whose sum is σ = 162307885320. Its totient is φ = 33031068672.

The previous prime is 78401341223. The next prime is 78401341247. The reversal of 78401341228 is 82214310487.

It is a super-2 number, since 2×78401341228² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78401341223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3378325 + ... + 3401452.

It is an arithmetic number, because the mean of its divisors is an integer number (4508552370).

Almost surely, 2^78401341228 is an apocalyptic number.

It is an amenable number.

78401341228 is an abundant number, since it is smaller than the sum of its proper divisors (83906544092).

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

78401341228 is a wasteful number, since it uses less digits than its factorization.

78401341228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6779854 (or 6779845 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 40.

The spelling of 78401341228 in words is "seventy-eight billion, four hundred one million, three hundred forty-one thousand, two hundred twenty-eight".