78205381707 has 8 divisors (see below), whose sum is σ = 110407597776. Its totient is φ = 49070043392.

The previous prime is 78205381703. The next prime is 78205381759. The reversal of 78205381707 is 70718350287.

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 78205381707 - 2² = 78205381703 is a prime.

It is a super-2 number, since 2×78205381707² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78205381703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 766719378 + ... + 766719479.

It is an arithmetic number, because the mean of its divisors is an integer number (13800949722).

Almost surely, 2^78205381707 is an apocalyptic number.

78205381707 is a deficient number, since it is larger than the sum of its proper divisors (32202216069).

78205381707 is a wasteful number, since it uses less digits than its factorization.

78205381707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1533438877.

The product of its (nonzero) digits is 658560, while the sum is 48.

The spelling of 78205381707 in words is "seventy-eight billion, two hundred five million, three hundred eighty-one thousand, seven hundred seven".