78610533861 has 8 divisors (see below), whose sum is σ = 110330573920. Its totient is φ = 49648758192.

The previous prime is 78610533847. The next prime is 78610533887. The reversal of 78610533861 is 16833501687.

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

It is not a de Polignac number, because 78610533861 - 2²⁹ = 78073662949 is a prime.

It is a super-2 number, since 2×78610533861² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78610533861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78610533821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 689566030 + ... + 689566143.

It is an arithmetic number, because the mean of its divisors is an integer number (13791321740).

Almost surely, 2^78610533861 is an apocalyptic number.

It is an amenable number.

78610533861 is a deficient number, since it is larger than the sum of its proper divisors (31720040059).

78610533861 is a wasteful number, since it uses less digits than its factorization.

78610533861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1379132195.

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 78610533861 in words is "seventy-eight billion, six hundred ten million, five hundred thirty-three thousand, eight hundred sixty-one".