78156573706 has 8 divisors (see below), whose sum is σ = 117371341440. Its totient is φ = 39032793228.

The previous prime is 78156573697. The next prime is 78156573709. The reversal of 78156573706 is 60737565187.

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

It is a super-2 number, since 2×78156573706² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78156573709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22744666 + ... + 22748101.

It is an arithmetic number, because the mean of its divisors is an integer number (14671417680).

Almost surely, 2^78156573706 is an apocalyptic number.

78156573706 is a deficient number, since it is larger than the sum of its proper divisors (39214767734).

78156573706 is a wasteful number, since it uses less digits than its factorization.

78156573706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45493628.

The product of its (nonzero) digits is 7408800, while the sum is 55.

The spelling of 78156573706 in words is "seventy-eight billion, one hundred fifty-six million, five hundred seventy-three thousand, seven hundred six".