78285781105 has 8 divisors (see below), whose sum is σ = 107363356992. Its totient is φ = 53681678448.

The previous prime is 78285781069. The next prime is 78285781157. The reversal of 78285781105 is 50118758287.

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

It is a cyclic number.

It is not a de Polignac number, because 78285781105 - 2³⁵ = 43926042737 is a prime.

It is a super-2 number, since 2×78285781105² (a number of 23 digits) contains 22 as substring.

It is a Duffinian 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, 1118368267 + ... + 1118368336.

It is an arithmetic number, because the mean of its divisors is an integer number (13420419624).

Almost surely, 2^78285781105 is an apocalyptic number.

It is an amenable number.

78285781105 is a deficient number, since it is larger than the sum of its proper divisors (29077575887).

78285781105 is a wasteful number, since it uses less digits than its factorization.

78285781105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2236736615.

The product of its (nonzero) digits is 1254400, while the sum is 52.

The spelling of 78285781105 in words is "seventy-eight billion, two hundred eighty-five million, seven hundred eighty-one thousand, one hundred five".