78283472161646 has 8 divisors (see below), whose sum is σ = 117439789814904. Its totient is φ = 39136875556680.

The previous prime is 78283472161633. The next prime is 78283472161667. The reversal of 78283472161646 is 64616127438287.

78283472161646 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×78283472161646² (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 3 ways as a sum of consecutive naturals, for example, 2430241940 + ... + 2430274151.

It is an arithmetic number, because the mean of its divisors is an integer number (14679973726863).

Almost surely, 2^{78283472161646} is an apocalyptic number.

78283472161646 is a deficient number, since it is larger than the sum of its proper divisors (39156317653258).

78283472161646 is a wasteful number, since it uses less digits than its factorization.

78283472161646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4860524146.

The product of its digits is 130056192, while the sum is 65.

The spelling of 78283472161646 in words is "seventy-eight trillion, two hundred eighty-three billion, four hundred seventy-two million, one hundred sixty-one thousand, six hundred forty-six".