7858236894378 has 96 divisors (see below), whose sum is σ = 17088499570176. Its totient is φ = 2407978669824.

The previous prime is 7858236894301. The next prime is 7858236894439. The reversal of 7858236894378 is 8734986328587.

It is a Harshad number since it is a multiple of its sum of digits (78).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 351320551 + ... + 351342917.

It is an arithmetic number, because the mean of its divisors is an integer number (178005203856).

Almost surely, 2^{7858236894378} is an apocalyptic number.

7858236894378 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 7858236894378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8544249785088).

7858236894378 is an abundant number, since it is smaller than the sum of its proper divisors (9230262675798).

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

7858236894378 is a wasteful number, since it uses less digits than its factorization.

7858236894378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23808 (or 23795 counting only the distinct ones).

The product of its digits is 3901685760, while the sum is 78.

The spelling of 7858236894378 in words is "seven trillion, eight hundred fifty-eight billion, two hundred thirty-six million, eight hundred ninety-four thousand, three hundred seventy-eight".