78256495587 has 8 divisors (see below), whose sum is σ = 106562036736. Its totient is φ = 51060975752.

The previous prime is 78256495561. The next prime is 78256495601. The reversal of 78256495587 is 78559465287.

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 78256495587 - 2¹² = 78256491491 is a prime.

It is a super-2 number, since 2×78256495587² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78256495507) 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, 277505163 + ... + 277505444.

It is an arithmetic number, because the mean of its divisors is an integer number (13320254592).

Almost surely, 2^78256495587 is an apocalyptic number.

78256495587 is a deficient number, since it is larger than the sum of its proper divisors (28305541149).

78256495587 is a wasteful number, since it uses less digits than its factorization.

78256495587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555010657.

The product of its digits is 169344000, while the sum is 66.

The spelling of 78256495587 in words is "seventy-eight billion, two hundred fifty-six million, four hundred ninety-five thousand, five hundred eighty-seven".