39216145986 has 12 divisors (see below), whose sum is σ = 84968316342. Its totient is φ = 13072048656.

The previous prime is 39216145963. The next prime is 39216146003. The reversal of 39216145986 is 68954161293.

39216145986 is a `hidden beast` number, since 39 + 2 + 1 + 6 + 14 + 598 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 38984528025 + 231617961 = 197445^2 + 15219^2 .

It is a super-2 number, since 2×39216145986² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1089337371 + ... + 1089337406.

Almost surely, 2^39216145986 is an apocalyptic number.

39216145986 is an abundant number, since it is smaller than the sum of its proper divisors (45752170356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39216145986 is a wasteful number, since it uses less digits than its factorization.

39216145986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2178674785 (or 2178674782 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 54.

The spelling of 39216145986 in words is "thirty-nine billion, two hundred sixteen million, one hundred forty-five thousand, nine hundred eighty-six".