78575577557587 has 8 divisors (see below), whose sum is σ = 85718946166272. Its totient is φ = 71432231329800.

The previous prime is 78575577557539. The next prime is 78575577557599.

78575577557587 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 78575577557587 - 2¹¹ = 78575577555539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78575577557498 and 78575577557507.

It is not an unprimeable number, because it can be changed into a prime (78575577557287) 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, 2220262 + ... + 12731092.

It is an arithmetic number, because the mean of its divisors is an integer number (10714868270784).

Almost surely, 2^{78575577557587} is an apocalyptic number.

78575577557587 is a deficient number, since it is larger than the sum of its proper divisors (7143368608685).

78575577557587 is a wasteful number, since it uses less digits than its factorization.

78575577557587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11190449.

The product of its digits is 117649000000, while the sum is 88.

The spelling of 78575577557587 in words is "seventy-eight trillion, five hundred seventy-five billion, five hundred seventy-seven million, five hundred fifty-seven thousand, five hundred eighty-seven".