9999980076647 has 8 divisors (see below), whose sum is σ = 11009152379280. Its totient is φ = 9007488308160.

The previous prime is 9999980076523. The next prime is 9999980076659. The reversal of 9999980076647 is 7466700899999.

It is a happy number.

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 9999980076647 - 2¹⁴ = 9999980060263 is a prime.

It is a pancake number, because a pancake can be divided into 9999980076647 parts by 4472131 straight cuts.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9999980076677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4170132278 + ... + 4170134675.

It is an arithmetic number, because the mean of its divisors is an integer number (1376144047410).

Almost surely, 2^{9999980076647} is an apocalyptic number.

9999980076647 is a deficient number, since it is larger than the sum of its proper divisors (1009172302633).

9999980076647 is a wasteful number, since it uses less digits than its factorization.

9999980076647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8340267073.

The product of its (nonzero) digits is 3333197952, while the sum is 83.

The spelling of 9999980076647 in words is "nine trillion, nine hundred ninety-nine billion, nine hundred eighty million, seventy-six thousand, six hundred forty-seven".