78146371565066 has 16 divisors (see below), whose sum is σ = 134054578152000. Its totient is φ = 33468959660640.

The previous prime is 78146371565047. The next prime is 78146371565107. The reversal of 78146371565066 is 66056517364187.

It is a happy number.

It is a super-2 number, since 2×78146371565066² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78146371564993 and 78146371565011.

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, 1861848155 + ... + 1861890126.

It is an arithmetic number, because the mean of its divisors is an integer number (8378411134500).

Almost surely, 2^{78146371565066} is an apocalyptic number.

78146371565066 is a deficient number, since it is larger than the sum of its proper divisors (55908206586934).

78146371565066 is a wasteful number, since it uses less digits than its factorization.

78146371565066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3723739789.

The product of its (nonzero) digits is 152409600, while the sum is 65.

The spelling of 78146371565066 in words is "seventy-eight trillion, one hundred forty-six billion, three hundred seventy-one million, five hundred sixty-five thousand, sixty-six".