78231428344086 has 16 divisors (see below), whose sum is σ = 156462952806000. Its totient is φ = 26077126761728.

The previous prime is 78231428344067. The next prime is 78231428344093. The reversal of 78231428344086 is 68044382413287.

It is a super-2 number, since 2×78231428344086² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10767310 + ... + 16504478.

It is an arithmetic number, because the mean of its divisors is an integer number (9778934550375).

Almost surely, 2^{78231428344086} is an apocalyptic number.

78231428344086 is an abundant number, since it is smaller than the sum of its proper divisors (78231524461914).

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

78231428344086 is a wasteful number, since it uses less digits than its factorization.

78231428344086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8009823.

The product of its (nonzero) digits is 49545216, while the sum is 60.

The spelling of 78231428344086 in words is "seventy-eight trillion, two hundred thirty-one billion, four hundred twenty-eight million, three hundred forty-four thousand, eighty-six".