78416007705 has 48 divisors (see below), whose sum is σ = 155748478080. Its totient is φ = 35752679424.

The previous prime is 78416007701. The next prime is 78416007707. The reversal of 78416007705 is 50770061487.

It is not a de Polignac number, because 78416007705 - 2² = 78416007701 is a prime.

It is a super-2 number, since 2×78416007705² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (78416007701) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 209032 + ... + 447801.

It is an arithmetic number, because the mean of its divisors is an integer number (3244759960).

Almost surely, 2^78416007705 is an apocalyptic number.

It is an amenable number.

78416007705 is a deficient number, since it is larger than the sum of its proper divisors (77332470375).

78416007705 is a wasteful number, since it uses less digits than its factorization.

78416007705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657230 (or 657227 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 45.

The spelling of 78416007705 in words is "seventy-eight billion, four hundred sixteen million, seven thousand, seven hundred five".