78587556346409 has 8 divisors (see below), whose sum is σ = 85733013334752. Its totient is φ = 71442288305440.

The previous prime is 78587556346381. The next prime is 78587556346447. The reversal of 78587556346409 is 90464365578587.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78587556346409 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78587556346409.

It is not an unprimeable number, because it can be changed into a prime (78587556046409) 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, 46366484 + ... + 48031509.

It is an arithmetic number, because the mean of its divisors is an integer number (10716626666844).

Almost surely, 2^{78587556346409} is an apocalyptic number.

It is an amenable number.

78587556346409 is a deficient number, since it is larger than the sum of its proper divisors (7145456988343).

78587556346409 is a wasteful number, since it uses less digits than its factorization.

78587556346409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94473687.

The product of its (nonzero) digits is 6096384000, while the sum is 77.

The spelling of 78587556346409 in words is "seventy-eight trillion, five hundred eighty-seven billion, five hundred fifty-six million, three hundred forty-six thousand, four hundred nine".