78226773299 has 4 divisors (see below), whose sum is σ = 78242358240. Its totient is φ = 78211188360.

The previous prime is 78226773281. The next prime is 78226773307. The reversal of 78226773299 is 99237762287.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78226773299 - 2¹⁶ = 78226707763 is a prime.

It is a super-2 number, since 2×78226773299² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78226773899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7784939 + ... + 7794980.

It is an arithmetic number, because the mean of its divisors is an integer number (19560589560).

Almost surely, 2^78226773299 is an apocalyptic number.

78226773299 is a deficient number, since it is larger than the sum of its proper divisors (15584941).

78226773299 is a wasteful number, since it uses less digits than its factorization.

78226773299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15584940.

The product of its digits is 32006016, while the sum is 62.

The spelling of 78226773299 in words is "seventy-eight billion, two hundred twenty-six million, seven hundred seventy-three thousand, two hundred ninety-nine".