78897672563 has 8 divisors (see below), whose sum is σ = 80152420608. Its totient is φ = 77652323784.

The previous prime is 78897672559. The next prime is 78897672613. The reversal of 78897672563 is 36527679887.

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 78897672563 - 2² = 78897672559 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78897672493 and 78897672502.

It is not an unprimeable number, because it can be changed into a prime (78897672523) 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, 2332895 + ... + 2366472.

It is an arithmetic number, because the mean of its divisors is an integer number (10019052576).

Almost surely, 2^78897672563 is an apocalyptic number.

78897672563 is a deficient number, since it is larger than the sum of its proper divisors (1254748045).

78897672563 is a wasteful number, since it uses less digits than its factorization.

78897672563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4699633.

The product of its digits is 213373440, while the sum is 68.

The spelling of 78897672563 in words is "seventy-eight billion, eight hundred ninety-seven million, six hundred seventy-two thousand, five hundred sixty-three".