78575257587 has 16 divisors (see below), whose sum is σ = 110301781760. Its totient is φ = 49617155232.

The previous prime is 78575257573. The next prime is 78575257603.

78575257587 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 78575257587 - 2¹⁴ = 78575241203 is a prime.

It is a super-2 number, since 2×78575257587² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78575257517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183138 + ... + 436680.

It is an arithmetic number, because the mean of its divisors is an integer number (6893861360).

Almost surely, 2^78575257587 is an apocalyptic number.

78575257587 is a deficient number, since it is larger than the sum of its proper divisors (31726524173).

78575257587 is a wasteful number, since it uses less digits than its factorization.

78575257587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259002.

The product of its digits is 192080000, while the sum is 66.

The spelling of 78575257587 in words is "seventy-eight billion, five hundred seventy-five million, two hundred fifty-seven thousand, five hundred eighty-seven".