78475072213 has 8 divisors (see below), whose sum is σ = 79783961400. Its totient is φ = 77176612800.

The previous prime is 78475072199. The next prime is 78475072237. The reversal of 78475072213 is 31227057487.

It can be written as a sum of positive squares in 4 ways, for example, as 33623456689 + 44851615524 = 183367^2 + 211782^2 .

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 78475072213 - 2¹⁷ = 78474941141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78475072253) 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, 2592270 + ... + 2622367.

It is an arithmetic number, because the mean of its divisors is an integer number (9972995175).

Almost surely, 2^78475072213 is an apocalyptic number.

It is an amenable number.

78475072213 is a deficient number, since it is larger than the sum of its proper divisors (1308889187).

78475072213 is a wasteful number, since it uses less digits than its factorization.

78475072213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5214887.

The product of its (nonzero) digits is 658560, while the sum is 46.

The spelling of 78475072213 in words is "seventy-eight billion, four hundred seventy-five million, seventy-two thousand, two hundred thirteen".