787321000891 has 8 divisors (see below), whose sum is σ = 789966706464. Its totient is φ = 784676027520.

The previous prime is 787321000889. The next prime is 787321000897. The reversal of 787321000891 is 198000123787.

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 787321000891 - 2¹ = 787321000889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (787321000897) 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, 2015361 + ... + 2374093.

It is an arithmetic number, because the mean of its divisors is an integer number (98745838308).

Almost surely, 2^787321000891 is an apocalyptic number.

787321000891 is a deficient number, since it is larger than the sum of its proper divisors (2645705573).

787321000891 is a wasteful number, since it uses less digits than its factorization.

787321000891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366101.

The product of its (nonzero) digits is 169344, while the sum is 46.

The spelling of 787321000891 in words is "seven hundred eighty-seven billion, three hundred twenty-one million, eight hundred ninety-one", and thus it is an aban number.