78465307205836 has 6 divisors (see below), whose sum is σ = 137314287610220. Its totient is φ = 39232653602916.

The previous prime is 78465307205821. The next prime is 78465307205867. The reversal of 78465307205836 is 63850270356487.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9808163400726 + ... + 9808163400733.

Almost surely, 2^{78465307205836} is an apocalyptic number.

It is an amenable number.

78465307205836 is a deficient number, since it is larger than the sum of its proper divisors (58848980404384).

78465307205836 is a wasteful number, since it uses less digits than its factorization.

78465307205836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19616326801463 (or 19616326801461 counting only the distinct ones).

The product of its (nonzero) digits is 203212800, while the sum is 64.

The spelling of 78465307205836 in words is "seventy-eight trillion, four hundred sixty-five billion, three hundred seven million, two hundred five thousand, eight hundred thirty-six".