78266534213 has 8 divisors (see below), whose sum is σ = 89449758528. Its totient is φ = 67083882624.

The previous prime is 78266534201. The next prime is 78266534251. The reversal of 78266534213 is 31243566287.

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 78266534213 - 2¹⁴ = 78266517829 is a prime.

It is a super-2 number, since 2×78266534213² (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 (78266534273) 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, 206645 + ... + 446357.

It is an arithmetic number, because the mean of its divisors is an integer number (11181219816).

Almost surely, 2^78266534213 is an apocalyptic number.

It is an amenable number.

78266534213 is a deficient number, since it is larger than the sum of its proper divisors (11183224315).

78266534213 is a wasteful number, since it uses less digits than its factorization.

78266534213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286363.

The product of its digits is 1451520, while the sum is 47.

The spelling of 78266534213 in words is "seventy-eight billion, two hundred sixty-six million, five hundred thirty-four thousand, two hundred thirteen".