78280620166585 has 8 divisors (see below), whose sum is σ = 95528892407040. Its totient is φ = 61563063995184.

The previous prime is 78280620166579. The next prime is 78280620166621. The reversal of 78280620166585 is 58566102608287.

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 78280620166585 - 2¹⁵ = 78280620133817 is a prime.

It is a super-2 number, since 2×78280620166585² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132679016937 + ... + 132679017526.

It is an arithmetic number, because the mean of its divisors is an integer number (11941111550880).

Almost surely, 2^{78280620166585} is an apocalyptic number.

It is an amenable number.

78280620166585 is a deficient number, since it is larger than the sum of its proper divisors (17248272240455).

78280620166585 is a wasteful number, since it uses less digits than its factorization.

78280620166585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265358034527.

The product of its (nonzero) digits is 77414400, while the sum is 64.

The spelling of 78280620166585 in words is "seventy-eight trillion, two hundred eighty billion, six hundred twenty million, one hundred sixty-six thousand, five hundred eighty-five".