78141605986 has 8 divisors (see below), whose sum is σ = 124107256620. Its totient is φ = 36772520448.

The previous prime is 78141605959. The next prime is 78141606001. The reversal of 78141605986 is 68950614187.

It can be written as a sum of positive squares in 2 ways, for example, as 77963249961 + 178356025 = 279219^2 + 13355^2 .

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

It is a super-2 number, since 2×78141605986² (a number of 23 digits) contains 22 as substring.

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, 1149141231 + ... + 1149141298.

Almost surely, 2^78141605986 is an apocalyptic number.

78141605986 is a deficient number, since it is larger than the sum of its proper divisors (45965650634).

78141605986 is a wasteful number, since it uses less digits than its factorization.

78141605986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2298282548.

The product of its (nonzero) digits is 2903040, while the sum is 55.

The spelling of 78141605986 in words is "seventy-eight billion, one hundred forty-one million, six hundred five thousand, nine hundred eighty-six".