78213722160606 has 64 divisors (see below), whose sum is σ = 169155777282048. Its totient is φ = 24015178142208.

The previous prime is 78213722160583. The next prime is 78213722160641. The reversal of 78213722160606 is 60606122731287.

It is a happy number.

It is a super-2 number, since 2×78213722160606² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 506806851 + ... + 506961153.

It is an arithmetic number, because the mean of its divisors is an integer number (2643059020032).

Almost surely, 2^{78213722160606} is an apocalyptic number.

78213722160606 is an abundant number, since it is smaller than the sum of its proper divisors (90942055121442).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78213722160606 is a wasteful number, since it uses less digits than its factorization.

78213722160606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260105.

The product of its (nonzero) digits is 2032128, while the sum is 51.

The spelling of 78213722160606 in words is "seventy-eight trillion, two hundred thirteen billion, seven hundred twenty-two million, one hundred sixty thousand, six hundred six".