78555470231 has 8 divisors (see below), whose sum is σ = 89782766880. Its totient is φ = 67329445248.

The previous prime is 78555470209. The next prime is 78555470249. The reversal of 78555470231 is 13207455587.

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 78555470231 - 2⁶ = 78555470167 is a prime.

It is a super-2 number, since 2×78555470231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78555470431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181646 + ... + 436011.

It is an arithmetic number, because the mean of its divisors is an integer number (11222845860).

Almost surely, 2^78555470231 is an apocalyptic number.

78555470231 is a deficient number, since it is larger than the sum of its proper divisors (11227296649).

78555470231 is a wasteful number, since it uses less digits than its factorization.

78555470231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635833.

The product of its (nonzero) digits is 1176000, while the sum is 47.

The spelling of 78555470231 in words is "seventy-eight billion, five hundred fifty-five million, four hundred seventy thousand, two hundred thirty-one".